Frequently Asked Questions
Patents | Trade Marks
   
   
     
 

Patents FAQ - YOUR QUESTIONS ANSWERED

Disclaimer: The material on this website is provided for general information only. It is not intended as legal advice on any specific factual situation. For such advice, a client must contact a member of the firm directly. Nothing on this website constitutes an offer for supply of goods or services and nothing on the website constitutes any waiver, in whole or in part, of the firm's Terms of Business, which govern all services provided to clients by the firm. 

Q1. What is an invention?
Q2. What is a patent?
Q3. Are there ways, other than patents, of protecting inventions in Europe?
Q4. How clever does an invention have to be before it can be patented?
Q5. Are there any inventions that cannot be validly patented in Europe?
Q6. How are patent applications checked for novelty?
Q7. Can you check and advise me whether my invention is new and whether it has already been patented by someone else?
Q8. Can you link me to web-sites where I can try my own searching?
Q9. Are there any mechanisms for delaying the patenting process to defer the costs?
Q10. I devised the invention in the course of my employment. What rights do I have personally?
Q11. Can you briefly outline the procedure you would follow for patenting my invention in the United Kingdom via the UK Patent Office (not using the PCT route initially)? How long is it likely to take?
Q12. Can you briefly outline the procedure you would follow for patenting my invention in the United Kingdom via the European Patent Office (not using the PCT route initially)?
Q13. Which route should I select - national UK or European?
Q14. What are the cost implications of the two routes - national UK and European?
Q15. How long does a patent last?
Q16. What difference does it make if I use the PCT route initially?
Q17. What about patents outside Europe?
Q18. What can happen if an invention is launched when it is already patented by someone else?
Q19. Can my patent be challenged after it has been granted?
Q20. How do I use my patent to stop unauthorised commercial use of my invention?
Q21. Are there any rules for how I should use my invention?
Q22. What do you need to file a UK or European patent application for my invention?
Q23. What do I do next?

Q1. What is an invention?

An invention can be defined as any technical advance which results in a recognisably new product, process or use.

It is the technical advance that sets an invention apart from purely artistic creativity, although in many instances artistic creativity has a supporting role to play, for example in applying an appealing design to a new product or in advertising and promoting a new use.

The term "invention" therefore embraces technical advances in many areas, for example:

- mechanical gadgets
- automobiles
- pharmaceuticals
- chemical processes
- technical computer software
- electronic goods
- manufacturing processes
- commercial products
- genetic engineering
- metallurgical processes and products
- new uses of known products
- telecommunications

Inventions may be legally protected, independently of any know-how used alongside them and independently of any products of purely artistic creativity that may be incorporated into inventive commercial products.

Protection of know-how (other than as an invention) is dealt with under Confidentiality. Protection of purely artistic creativity is dealt with under Copyright and Designs.

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Q2. What is a patent?

A patent is a statutory monopoly which lasts for a defined length of time (typically, as in the United Kingdom, for up to twenty years from the application date). If valid, a patent protects an invention against unauthorised commercial use in the relevant territory during the period for which it can be enforced.

In the United Kingdom, a patent can be obtained via

(i) the (national) UK Patent Office, according to the requirements of the Patents Act 1977 (as amended);

(ii) the European Patent Office, according to the requirements of the European Patent Convention of 1973 (as amended); or

(iii) both.

Option (i) yields a right which, if valid, is enforceable in the territory and waters of the United Kingdom, including the Isle of Man, the seabed of the Continental Shelf and the United Kingdom sector of the North Sea.

Option (ii) yields a right which, if valid, is enforceable in the territories and waters of a range of European countries selected by the applicant as part of the application procedure, including potentially all countries of the European Union, Switzerland, Cyprus and, by extension, some Eastern European countries.

See our Europe-EPC information pages for further details of the countries available via a European Patent, both as Contracting States to the European Patent Convention and as Extension States having bilateral agreements with the European Patent Office.

If option (iii) is used, the applicant will end up with only one patent, as a mechanism is provided to prevent duplication of patents; however, if one of the routes yields a better patent than the other, the applicant can keep the better right.

A patent is an exclusive right to the invention defined ("claimed") in the patent document. That is: it is a right to exclude others from using the invention commercially. Importantly, it does not guarantee its owner that the invention can be commercially exploited, and indeed it is perfectly possible for the commercial exploitation of patented inventions to be hindered or prevented in many different ways. These may include:

- the presence of earlier third-party patents to inventions that must necessarily be used to enable the later (e.g. improvement) invention;

- the presence of regulations or legislation limiting the freedom to commercialise, e.g. on public health or safety grounds;

- difficulties in manufacturing at an affordable cost;

- poor business skill on the part of the inventor;

- bad publicity or advertising;

- the invention being overtaken by later improvements;

- market resistance, consumer conservatism or manufacturing inertia (e.g. caused by set-up costs or resistance to scrapping existing products).

Claims
The potential power of a patent lies in the act that the invention is defined verbally in a set of definitions known as the "claims". Each claim will define the invention in relation to specified features and variations in a way which will not normally be tied to any one implementation of the invention in a particular individual product design. A properly constructed set of claims will offer protection against many more potential variants and imitations than would a corresponding registered design, unregistered design right or copyright.

For example, the basic patent for the well-known "WORKMATE" ®, the original handyman's workbench, invented by the British inventor Ron Hickman, claimed in general terms the concept of any workbench in the form of a vice having independently operable ends. In this way, the whole market in such workbenches with equivalent features and function was controlled. Had the inventor relied only on registered design protection or copyright, production of benches with a different visual appearance, but which used the same functional concept, would not have been subject to the inventor's control.

The scope of protection provided by a patent will depend on how the claims are interpreted by the Courts. In European Patent Convention countries, the scope will be determined in accordance with Article 69 EPC and subject to the "Protocol on the Interpretation of Article 69", which provides that the claims are to be interpreted so as to provide "...a fair protection for the patentee with a reasonable degree of certainty for third parties." At their Diplomatic Conference in November 2000, the EPC countries also agreed to add a clause to the Protocol explicitly stating "For the purpose of determining the extent of protection conferred by a European patent, due account shall be taken of any element which is equivalent to an element specified in the claims." (This amendment will officially come into force after ratification of the Revision Act (.pdf file) adopted at the Diplomatic Conference.)

This additional clause reflects the approach adopted in the US under the so-called "Doctrine of Equivalents", whereby a US Court may find a patent to be infringed in situations where an alleged infringer has adopted "equivalents" to specified claim features rather than taking the elements as literally specified in a patent claim at issue.

A recent decision of the US Court of Appeals for the Federal Circuit (CAFC) - Festo Corp. v Shoketsu KKK - had suggested that the extent to which this Doctrine could be applied should be severely restricted. The CAFC ruled that if a claim were amended during examination, for any reason relating to patentability, this would create a "prosecution history estoppel" which would deny the patentee the right to any equivalents in respect of the amended claim.

The US Supreme Court subsequently delivered a unanimous opinion on this controversial CAFC decision, moderating the CAFC's view. It asserted that prosecution history estoppel may apply to any claim amendment made to satisfy the Patent Act's requirements, not just to amendments made to avoid the prior art, but that estoppel need not bar suit against every equivalent to the amended claim element. In particular, the Court observed:

"By amending the application, the inventor is deemed to concede that the patent does not extend as far as the original claim. It does not follow, however, that the amended claim becomes so perfect in its description that no one could devise an equivalent. After amendment, as before, language remains an imperfect fit for invention. The narrowing amendment may demonstrate what the claim is not; but it may still fail to capture precisely what the claim is. There is no reason why a narrowing amendment should be deemed to relinquish equivalents unforeseeable at the time of the amendment and beyond a fair interpretation of what was surrendered. Nor is there any call to foreclose claims of equivalence for aspects of the invention that have only a peripheral relation to the reason the amendment was submitted. The amendment does not show that the inventor suddenly had more foresight in the drafting of claims than an inventor whose application was granted without amendments having been submitted. It shows only that he was familiar with the broader text and with the difference between the two. As a result, there is no more reason for holding the patentee to the literal terms of an amended claim than there is for abolishing the doctrine of equivalents altogether and holding every patentee to the literal terms of the patent."

Hopefully, this decision restores a rational balance to US claim interpretation, more consistent with the interpretation of European Patent claims. (Such "prosecution history estoppel" is not applicable to the interpretation of European Patent claims.)

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Q3. Are there ways, other than patents, of protecting inventions?

Certain limited protective rights can, in appropriate cases, be obtained by the following methods:

(i)  maintaining confidentiality for as long as possible (see Confidentiality for more details);

(ii) obtaining short-term patent-like rights (e.g. petty patents, short-term patents or utility models) in overseas countries where such protection is available (our individual European Country pages indicate if such rights may be available but a member of the firm should always be consulted for confirmation of the type and extent of protection available in any specific case);

(iii) using design protection to protect specific features of shape, configuration, pattern or ornament of an article (see Designs for more details);

(iv) using copyright protection to protect accompanying literature or artwork (see Copyright for more details);

(v) using trade mark protection to protect a specific distinctive shape or surface decoration of a product (see Trade Marks for more details);

(vi) using plant variety rights protection to protect a specific new plant variety;

(vii) using semiconductor topography rights protection to protect a specific new semiconductor topography.

Contact Us if any specific advice or assistance is required, concerning these types of rights.

All these alternative methods have disadvantages as ways of protecting a general invention. For example:

(i) is good only so long as confidentiality can be maintained; does not stop use of an independently devised invention; and does not stop attempts by others to protect that independently devised invention;

(ii) is available only in certain countries, and is typically limited to a maximum period of 10 years of protection, although the rights are often easier to obtain than a patent;

(iii), (iv), (v) and (vii) are specific rights to a particular expression in the form of a copyright work, a trade mark or semiconductor topography rather than to an invention in general; and

with the exception of registered designs, (iii), (iv) and (vii) are restricted to protecting against unauthorised copying, rather than providing monopoly protection against any unauthorised use.

In general, therefore, a patent is the best way to protect an invention against unauthorised use.

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Q4. How clever does an invention have to be before it can be patented in Europe?

Patents are granted for inventions in many areas of technology, both high-tech and low-tech.

Outside Western Europe, there are substantial variations in the rules from country to country, but in Western Europe (including the United Kingdom) the rules are largely harmonised. In Western Europe, to be patentable an invention must:

(i)  be new, in the sense of not having been previously made available to the public by publication or use anywhere in the world; in legal terms, this is often expressed as a requirement for "novelty" over the "state of the art" or "prior art" (i.e. everything previously made available);

(ii) involve an inventive step, in the sense of not being obvious to a person skilled in the relevant art (i.e. the relevant technological field);

(iii) be capable of industrial application, in the sense of being able to be made or used in any kind of industry, including agriculture; and

(iv) not be in a category of subject-matter which is specifically excepted from being patentable (see Q5 below).

    In many cases it is the second requirement (ii) - that the invention must involve an inventive step in the sense of being not obvious to a person skilled in the relevant art - that gives particular difficulty when predicting and judging patentability. However, the rule is that during the examination for patentability in a Patent Office the benefit of any doubt must be given to the person applying for the patent, and that hindsight must not be used when judging the matter. For these reasons, patents can be granted on inventions which with hindsight appear simple and obvious, provided that they were not obvious beforehand.

    A fair assessment of the capabilities of the notional "person skilled in the art" is clearly critical to making an objective judgement of whether or not an invention is patentable. This is where many inventors and companies can run into difficulties. The "person skilled in the art" is presumed to be an ordinary practitioner aware of what was common general knowledge in the art at the relevant date and also of what could have been located by diligent searching. He or she is presumed to have normal research facilities available and an ordinary capacity for experimentation and to be able to consult with colleagues or specialists having complementary or related skills, if this would be normal practice in the relevant art. Critically, however, he or she is presumed to have no exceptional level of skill and imagination.

    It frequently happens that a highly-skilled expert devises an invention but decides not to apply for a patent because the expert thinks that the idea was obvious to him or her. If, in reality, it would not have been obvious to the ordinary "person skilled in the art" - who is the relevant person according to the legal test to be applied - then it may well have been possible to obtain patent protection for such an invention. The consequences of neglecting to consider this possibility can include (a) a failure by the expert to properly patent and control his or her invention; and (b) an inability to commercially exploit the invention because another inventor has thought to obtain a patent on it! In case (b), moreover, considerable time and resources can be wasted before the existence of such a patent is discovered, because the highly-skilled expert dismissed the level of inventiveness and the potential patentability of the invention.

    The moral is not to overestimate the skills to be attributed to the notional "person skilled in the art" for the purposes of assessing whether or not an invention is likely to be considered obvious.

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    Q5. Are there any inventions that cannot be validly patented in Europe?

    Yes.

      Most importantly, inventions which have been made publicly available anywhere in the world before a patent application is filed cannot be validly patented in Western Europe. This is the case even if only one person, or a very small number of people, know of the invention and were not subject to an obligation to keep it confidential. In Western Europe, there is no grace period (as exists under US law, for example) to allow an inventor to apply for a patent after any voluntary disclosure of the invention.


    An invention which is made available to the public anywhere in the world before an application for a patent is filed will fail the first requirement of patentability Q4(i) above - it will not be "new".

    Similarly, an invention which is obvious in comparison with what is available to the public anywhere in the world before an application for a patent is filed will fail the second requirement of patentability Q4(ii) above - it will lack an "inventive step".

    An invention which is not capable of industrial application will fail the third requirement of patentability Q4(iii) above. In practice, an invention will normally possess industrial applicability if it has any commercial significance at all. However, under the European Patent Convention, methods of treatment of the human or animal body by surgery or therapy and diagnostic methods practised on the human or animal body are considered not to be susceptible of industrial application and are therefore not patentable. This exclusion is narrowly construed, and there are alternative ways of defining inventions in the excluded fields so as to avoid the exclusion - specific advice should be sought if an invention is in these fields.

    This leaves the fourth requirement of patentability Q4(iv) above, namely that the invention does not lie in one of the statutorily excluded categories of subject-matter. These categories cover things which, for various public policy reasons, are either not considered to be "inventions" or which are otherwise specifically excluded from being patentable. In Western Europe, the exclusions from patentability are as follows:

      (a) Not considered as "inventions":

      - discoveries as such;
      - scientific theories as such;
      - mathematical methods as such;
      - literary works as such;
      - dramatic works as such;
      - musical works as such;
      - artistic works as such;
      - aesthetic creations as such;
      - schemes, rules or methods for performing a mental act as such;
      - schemes, rules or methods for playing a game as such;
      - schemes, rules or methods for doing business as such;
      - computer programs as such;
      - presentation of information as such.

      (b) Excluded from patentability (i.e. inventions for which patents are not allowed):

      - inventions the publication or exploitation of which would be generally expected to encourage offensive, immoral or anti-social behaviour (contrary to "ordre public"); and
      - any variety of animal or plant or any essentially biological process for the production of animals or plants, not being a micro-biological process or the product of such a process.

A number of these exclusions have been carefully considered in decided cases in the UK Patent Office, the UK Courts and/or the European Patent Office, and the precise effect of the exclusion may not be immediately apparent from its wording. For example, the exclusion of "computer programs as such" does not, in practice, prevent inventions which are implemented in computer programs from being patented in Europe, provided that such inventions have a technical character. The exclusions relating to "ordre public" and plant or animal varieties do not, in practice, prevent genetic engineering inventions from being patented in Europe.

Contact us for specific advice if you consider an invention may be excluded from patentability for the reasons set out above.

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Q6. How are patent applications checked for novelty?

To assess whether an invention is new and involves an inventive step - and therefore may be patentable in Europe (if it is not otherwise excluded - see Q5 above) - the normal process is to conduct searches of relevant technical literature and other publications.

The patent collections of the world’s Patent Offices are a good starting point for any searches, because they are carefully classified according to the technical subject-matter. In addition, technical literature which is held on the Internet or on databases on which "key word" searches can be performed can also be included in searches. (See Q8 below, and our Search page for links to various web-sites where keyword and other useful searches can be carried out).

Some other technical literature is well indexed, and these indexes can be inspected relatively easily. After consulting indexed material, and if a prior disclosure of the same or similar invention is not revealed, it would be possible, although time-consuming, to review collections of relevant technical literature even without the benefit of any indexing.

If an invention has previously been made available to the public by non-confidential use, without any accompanying written publication, it would be necessary to find witnesses to confirm the details of any use that took place. It is not usual to make such enquiries unless there is good reason to suspect that use may have taken place.

As a practical matter, most Patent Offices conduct only limited searches of the published literature when carrying out formal examination of a patent application for the novelty and obviouness requirements. Such searches will typically extend to specified patent collections and keyword searches on databases, but not usually beyond that. For this reason, patents are granted with no guarantee of validity. More detailed investigations are generally only undertaken when one party wants to invalidate another's patent, for example in contemplation of opposition or revocation proceedings or in response to a claim of infringement.

We are always happy to arrange for searches to be conducted of technical literature and other publications on a client’s behalf, for example as a preliminary to the filing of a patent application, as a supplement to any official search conducted on a patent application, or as part of a proposed challenge to the validity of another party’s patent or patent application. For more details, see Q7 below.

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Q7. Can you check and advise me whether my invention is new and whether it has already been protected by someone else?

Yes. One of the services we can provide is a search and advice service.

Firstly, we would need to discuss with you the purpose of the search. If it is to establish whether your invention is new, we would select a time window over which it would be likely for a publication to have disclosed the invention; the database collections likely to provide a good supply of potential disclosures; the language(s) in which you would be happy to receive revealed documents; possible company or inventor names to target specifically; and the budget you would wish us to work within.

If, on the other hand, the purpose of the search is to establish whether your invention has already been protected by someone else and whether operating your invention would infringe another person's rights, a slightly different strategy would be required. The time window for the search would be fixed as the previous 20 years (the maximum possible patent term in normal cases); the database collection would be fixed as the patents and other relevant Intellectual Property rights of the country or countries of interest; we would be looking primarily at the claims of those patents and the protection conferred by any other relevant Intellectual Property rights, rather than the total disclosures; we would additionally need to check that any patents and other relevant Intellectual Property rights located are still in force and that their scope has not been restricted; and as before, the budget you would wish us to work within.

In either case, it is important to realise that searching for relevant prior art is like looking for a needle in a haystack when you don’t know whether or not there is a needle there! Searches, if the result is negative, can only ever be considered as indicative and never conclusive. Depending on the level of confidence desired in any particular case and the importance of what is at stake, it may be prudent to consider extended or supplementary searches if initial results are negative. Ultimately, time and costs always have to be balanced against the degree of certainty commensurate with the risk.

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Q8. Can you link me to web-sites where I can try my own searching?

Disclaimer: These links are provided for convenience only. Page Hargrave makes no warranty and accepts no liability with respect to the accuracy, completeness or fitness for purpose of any of the linked databases and search facilities.

For Patent Searches try:

esp@cenet (UK Patent Office)

Search for patent applications in their original language from Great Britain and other European countries, the European Patent Office (EPO) and WIPO/PCT databases (International applications); patent applications with an English abstract and title from Japan; and over 30 million documents worldwide.

The Delphion Intellectual Property Network (formerly IBM IP Network)

Search for US Patent front pages, claims, titles, abstracts, inventors and companies; European (EP-A) applications, (EP-B) issued patents; Patent Abstracts of Japan & WIPO PCT Publications.

The WIPO PCT Gazette

Search for front pages and drawings of PCT applications published since 1997.

Patent Abstracts of Japan - Japanese Patent Office

English abstracts of Japanese Patents but no drawings

Patent Abstracts of Japan - PATON

Technical University of Ilmenau PATON (Patent Information Online) provides the most up-to date and convenient search facility, but requires password for access. The PAJ database is split into two files:
- Backfile 1976-93
- Frontfile 1994 onwards

English abstracts of Japanese Patents but no drawings

For other searches see the additional links on our Search page

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Q9. Are there any mechanisms for delaying the patenting process to defer the costs?

Yes. Any of options (i), (ii) and (iii) mentioned in Q2 can be modified by using one or both of two established delaying procedures beforehand:

(a) The "Priority" System

The Priority system (otherwise known as the "Paris Convention" or "Convention" system) allows an applicant to file one or more basic patent or utility model applications, normally in the applicant's home country, within a period of one year, before completing a final (composite) "Convention" application, which will claim the "Priority" of the earlier basic application(s). The applicant must file any desired "Convention" application(s) with the Patent Office(s) appropriate to the country or countries of interest (i.e. options (i), (ii) or (iii) in Q2 above for the United Kingdom) and must claim the "Priority" (Date) of the earlier basic application(s), within a one year period calculated from the date of filing of the earliest basic application which has not been expressly withdrawn or abandoned. Otherwise, the right to "Priority" is lost.

The World Intellectual Property Organisation, WIPO, maintains a list (.pdf) of the countries which are party to the Paris Convention, and which recognise the deferral of the filing of "Convention" applications for the period of up to one year after the filing of a basic home country application. Following implementation of the World Trade Organisation (WTO) Agreement on Trade Related Aspects of Intellectual Property Rights (TRIPS), the right to claim "Convention" Priority is now also extended to all WTO members irrespective of whether or not they are also signatories of the Paris Convention. Additionally, the UK has reciprocal arrangements with a number of other countries, which are recognised as "Convention" countries for the purposes of UK patent filings. The UK list below is derived from The Patents (Convention Countries) Order 1994 SI 3220 as amended by The Patents (Convention Countries) (Amendment) Order 1995 SI 2989 and The Patents (Convention Countries) (Amendment) Order 2000 SI 1114 (which added Taiwan as a convention country).

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(b) The Patent Co-operation Treaty (PCT) System

The PCT System requires an applicant to file a complete application (known as an "International Application") with the International Bureau of the World Intellectual Property Organisation in Geneva, by the end of the one year "Priority" period mentioned above, but then extends the deadline for filing corresponding application(s) in the Patent Office(s) appropriate to the country or countries of interest, which must be PCT Contracting States, and thus allows national filing costs to be deferred for up to a further 18 (or in some countries 19) months. During that time an International Search (and optionally an International Preliminary Examination - IPE) would be carried out, giving an indication of whether and what objections are likely to be raised by the national or regional offices. The PCT System is operated according to the provisions of the Patent Co-operation Treaty and Regulations. For a quicklook overview of PCT coverage in Europe see our Europe-PCT page.

The PCT System is therefore very useful if patent protection is likely to be required in significant number of major countries (most major countries, including the US, are PCT Contracting States). A single PCT application can form the basis for patents to be granted by national offices of relevant Contracting States or by regional offices, including the European Patent Office, the Eurasian Patent Organisation, the African Regional Intellectual Property Organisation (ARIPO) and the African Intellectual Property Organisation (OAPI).

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Q10. I devised the invention in the course of my employment. What rights do I have personally?

The following comments are appropriate to rights in respect of the United Kingdom only. For advice in relation to rights in other countries, please consult a member of the firm.

Provided that an employment contract, or conditions of work having the characteristics of employment, existed when the invention was made, the employer (i.e. the company or other owner of the business) will automatically be the legal first owner of the invention, and the right to any patent(s) on it, if the invention was made in the course of the employee’s normal duties, or in the course of other duties specifically assigned to the employee, and the circumstances in either case were such that an invention might reasonably be expected to result from the carrying out of those duties.

As far as directors, managers or other officers are concerned, the employer (i.e. the company or other owner of the business) will automatically be the legal first owner of the invention, and the right to any patent(s) on it, if the invention was made in the course of the director’s, manager’s or officer’s duties and, because of the nature of those duties and the particular responsibilities arising from the nature of his or her duties, he or she had a special obligation to further the interests of the business.

In general, therefore, an employer automatically owns an employee’s invention (including a director’s, manager’s or officer’s invention) where that invention is relevant to the business and where either the employee was employed (or assigned) to invent or was sufficiently senior to have a "special obligation" to further the interests of the business.

If however, the invention was actually devised in the employee’s own time, there may be difficulty in deciding whether the requirements stated above have been satisfied. In particular, was the invention "made in the course of the normal duties" of the employee or, in the case of a director, manager or officer, "in the course of [his or her] duties"? For advice on specific cases, a member of the firm must be consulted.

Unless an employer can claim legal first ownership in one of the ways set out above, the employee (including a director, manager or officer) will automatically be the legal first owner of the invention.

Of course, the legal first owner of an invention (whether employer or employee) can voluntarily transfer his ownership to another party, typically in return for monetary compensation or "consideration". This type of transfer is known as "assignment". It is normal and advisable for a company to secure assignments from its employee inventors as a precaution, even if the circumstances appear clear that the company is automatically the legal first owner of the invention.

The Patents Act 1977 includes lengthy provisions (ss39-43 - .pdf version) whereby an employee, who has made a patented invention which the employer otherwise automatically owns by virtue of the rules explained above, can claim compensation through proceedings in the UK Patents Court or the UK Patent Office provided that the patent has been of "outstanding benefit" for the employer. In practice, none of these proceedings has ever been decided in favour of an employee, principally due to difficulties in proving that the required "outstanding benefit" has accrued directly from the patent. It must be concluded that employed inventors, unless they have a contract with their employer that provides for compensation where an invention is automatically owned by the employer, cannot expect to succeed in a legal claim for compensation from the employer after the event.

All inventors - employed or not - do have the right to be acknowledged on any patent for their invention. However, this right of acknowledgement extends only to the naming of the inventor(s); it does not, of itself, provide the inventor(s) with any ownership or control of the invention or patent(s).

Warning: All employees (including directors, managers and other officers) should take their own legal advice if they are considering publishing, patenting or exploiting on their own account inventions to which their employer may be entitled as first legal owner. Not only may such actions breach the Patents Act 1977, but offences may also be committed under other Statutes or under common law.

The legal position of employed designers is generally similar to the legal position of employed inventors, but there are important differences in some circumstances (in particular, there are no corresponding provisons allowing an employee to seek compensation where a design or copyright has been of any benefit to an employer). For further discussion of rights relevant to designers and artists, see our Designs and Copyright pages.

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Q11. Can you briefly outline the procedure you would follow for patenting my invention in the United Kingdom via the UK Patent Office (not using the EP/PCT routes initially)? How long is it likely to take?

It is vital that you maintain your invention confidential before any application for a patent is filed (see Q5 above).

We would start the procedure by filing, on your behalf, an application for a patent in the UK Patent Office.

If the application is the first filing of any application for that invention, the application must include:

• a request for the grant of a patent
• a description (and, if necessary, drawings) of the invention
• the name and address of the applicant
• the status of an incorporated applicant (e.g. the country or state of incorporation).

If the application is a subsequent filing, claiming priority (see Q9 above) from one or more basic applications in the United Kingdom or overseas, the application must also include:

• a declaration of Priority, showing the details of the basic application(s).

In either case, the following additional material must also be filed by the deadline stated:

• claims defining the invention
(deadline: 12 months from the filing date or from the earliest claimed priority date or, if later, one month from the filing date in a case where priority is claimed) (no extension available)

• an abstract summarising the invention
(deadline: as for claims)

• a request for preliminary examination of the application and search of the official records for publication of identical and similar earlier inventions
(deadline: as for the claims). (The appropriate fees for preliminary examination and search must also be paid.)

• professionally prepared drawings, if requested by the UK Patent Office
(deadline: set by the UK Patent Office if the drawings filed do not meet the prescribed standards) (limited extension available)

• the full name and address (business or home) of the (or each) inventor, unless (s)he is the (sole) applicant and this fact is already stated
(deadline: 16 months from the filing date or from the earliest claimed priority date, if any) (limited extension available)

• if appropriate, details of how the rights of the (or each) inventor have passed to the applicant
(deadline: 16 months from the filing date or from the earliest claimed priority date, if any) (limited extension available)

• if appropriate, an officially certified copy of the or each basic application from which priority has been claimed (or, if that is an abandoned UK patent application, a request for the papers to be re-used from the official file)
(deadline: 16 months from the earliest claimed priority date) (limited extension available)

• if appropriate, a certified English translation of the or each basic application, from which priority has been claimed
(deadline: the date of grant of the UK patent, unless requested earlier by the UK Patent Office)

• if appropriate, as an alternative to the certified English translation of the or each basic application, a declaration to the effect that the full UK patent application is a complete translation of the relevant basic application
(deadline: the date of grant of the UK patent, unless requested earlier by the UK Patent Office)

As soon as the request for preliminary examination and search has been filed, and the appropriate fee paid, the UK Patent Office will conduct its preliminary examination and search. In the preliminary examination, any formal deficiencies in the papers that have been filed will be brought to our attention and we will then correct them. In the search, any relevant prior publications located by the Search Examiner will be listed in a Search Report and copies provided. We normally make a charge for reporting the results of the search to you (if requested, this charge can be included for convenience in the initial charges raised when the application is first filed).

The UK Patent Office will automatically publish the application on, or shortly after, the expiry of the period of 18 months from the filing date or from the earliest claimed priority date, if any.

Unless you yourself have by then publicly disclosed the invention, for example through non-confidential discussions, through advertising or publicity or through launch of a marketed product or process (provided in each case that the relevant action makes the invention available non-confidentially to at least one member of the public), and provided that publication has not taken place by other means, this official publication by the UK Patent Office will constitute the first publication of the invention. Therefore, even if you yourself have maintained confidentiality, in some (but not all) countries of the world applications for corresponding overseas patents cannot validly be filed after this official publication date. For details of which countries this rule would apply to, please contact a member of the firm.

However, although the official publication may prevent subsequent filing of valid patent applications in many overseas countries, it will have the effect of estabishing the date from which your rights can subsequently be enforced against infringers after the UK patent is granted.

To be granted, the application must successfully pass the substantive examination stage. Substantive examination must be initiated by the filing of a formal request within six months after the date of the official publication mentioned above (limited extension available). In the substantive examination stage, an Examiner of the UK Patent Office is assigned to the application, and checks it thoroughly for compliance with all the patentability requirements of the UK Patents Act 1977 (see Q4 and Q5 above). If necessary, we will enter into correspondence with the Examiner on your behalf (and subject to your instructions), either to argue and explain that any misgivings the Examiner may have are unfounded, or to amend the application papers to cure any defects noted. The correspondence between us and the Examiner will be held on an open file in the UK Patent Office, which members of the public may inspect.

In the event that agreement with the Examiner cannot be reached in correspondence, or in a telephone conversation, or as a result of an informal meeting, a formal Hearing can be held before a senior official of the Patent Office (a "Hearing Officer"), to try to resolve the matter. If agreement still cannot be reached, the application would be refused and you would then have to appeal to the Patents Court (part of the High Court of Justice), and from there, if necessary, to the Court of Appeal and House of Lords.

The costs of each stage of the procedure will depend on the amount of work involved, as well as the official fees charged by the UK Patent Office for the preliminary examination and search, and for the substantive examination. See Q14 below, for further information on likely costs.

The procedure is clearly staged, and the likely costs can be discussed at each stage in the process. At any stage, an application can be withdrawn if further expenditure is not felt to be warranted. The application would then be of no further effect, other than as a publication against later applications for protection of the same or a similar invention (assuming the official publication has taken place). Costs already incurred are not refundable.

It is not possible to guarantee that any patent application will succeed and mature to a granted UK patent. This is dependent primarily on whether the invention meets the patentability requirements of the UK Patents Act 1977 (see Q4 and Q5 above).

It is also not possible to predict precisely how long the patenting procedure may take for any given application. This will largely depend on whether an applicant wishes to take advantage of all the available time for completing each stage, or to speed the procedure up (which of course would have the effect of bringing forward later costs). In addition, the patenting procedure can be slower if the application has a complex substantive examination stage. Under Section 20 of the UK Patents Act 1977, an application cannot be pending for more than four years and six months from the filing date or from the earliest claimed priority date, if any, without a decision on patentability being taken by the UK Patent Office (unless the initial examination has been unusually delayed, in which case a longer period will be allowed). If, by the end of that period the UK Patent Office is still unable to grant a patent, the application will be treated as having been refused. More typically, however, the substantive examination can be expected to be completed between about 3 and 4 years after the filing date or from the earliest claimed priority date, if any.

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Q12. Can you briefly outline the procedure you would follow for patenting my invention in Western Europe (potentially including the United Kingdom) via the European Patent Office (not using the PCT route initially)? How long is it likely to take?

It is vital that you maintain your invention confidential before any application for a patent is filed (see Q5 above).

It is also important that a UK resident does not file any patent application outside the UK without having previously filed a corresponding patent application with the UK Patent Office, or without having first obtained formal clearance from the UK Patent Office. Unauthorised overseas patent filing is a criminal offence under the National Security and Safety provisions of Sections 22 and 23 of the Patents Act 1977 (.pdf file). (However, compliance with these provisions can conveniently be met by depositing a European Patent Application with the UK Patent Office, which will then check the application before forwarding it to the European Patent Office).

We would start the procedure by filing, on your behalf, an application for a patent in the European Patent Office (normally via the UK Patent Office to ensure compliance with the requirements of Section 23 of the Patents Act 1977).

If the application is the first filing of any application for that invention, the application must include:

• a request for the grant of a patent
• a description (and, if necessary, drawings) of the invention
• claims defining the invention
• the name and address of the applicant
• the status of an incorporated applicant (e.g. the country or state of incorporation)

If the application is a subsequent filing, claiming priority from one or more basic application(s) in the United Kingdom or overseas, the application must also include:

• a declaration of Priority, showing the details of the basic application(s).

In either case, the following additional material must also be filed by the deadline stated:

• an abstract summarising the invention
(deadline: set by the European Patent Office) (any extension is at the discretion of the European Patent Office, and cannot be guaranteed)

    • payment of the filing fee and the fee for a search of the official records for publication of identical and similar earlier inventions
    (deadline: one month from the filing date) (no extension available)

    • professionally prepared drawings, if requested by the European Patent Office
    (deadline: set by the European Patent Office if the drawings filed do not meet the prescribed standards) (any extension is at the discretion of the European Patent Office, and cannot be guaranteed)

    • the full name and address (business or home) of the (or each) inventor, unless (s)he is the (sole) applicant and this fact is already stated
    (deadline: 16 months from the filing date or from the earliest claimed priority date, if any) (no extension available)

    • if appropriate, details of how the rights of the (or each) inventor have passed to the applicant
    (deadline: 16 months from the filing date or from the earliest claimed priority date, if any)(no extension available, although a two month period will be set by the European Patent Office for correction if the details are not supplied voluntarily)

    • if appropriate, an officially certified copy of the or each basic application from which priority has been claimed (not required if the basic application is (i) a European patent application, (ii) a Japanese patent application, (iii) a Japanese utility model application or (iv) an International (PCT) patent application whose number is prefixed by the letters PCT/EP or PCT/JP)
    (deadline: 16 months from the earliest claimed priority date) (no extension available, although a two month period will be set by the European Patent Office for correction if the details are not supplied voluntarily)

    • if appropriate, an English, French or German translation of the or each basic application from which priority has been claimed
    (deadline: the deadline for payment of the grant and printing fee after examination, unless requested earlier by the European Patent Office)

    • if appropriate, as an alternative to the English, French or German translation of the or each basic application, a declaration to the effect that the European patent application is a complete translation of the relevant basic application
    (deadline: the deadline for payment of the grant and printing fee after examination, unless requested earlier by the European Patent Office).

As soon as the filing and search fees have been paid, the European Patent Office will conduct its preliminary examination and search. In the preliminary examination, any formal deficiencies in the papers that have been filed will be brought to our attention and we will then correct them. In the search, any relevant prior publications located by the Search Examiner will be listed in a Search Report and copies provided. We normally make a charge for reporting the results of the search to you, although if you so request this charge can be included as an advance charge when the application is filed.

In addition, the European Patent Office will automatically publish the application on, or shortly after, the expiry of the period of 18 months from the filing date or from the earliest claimed priority date, if any.

Unless you yourself have publicly disclosed the invention already, for example through non-confidential discussions, through advertising or publicity or through launch of a marketed product or process (provided in each case that the relevant action makes the invention available non-confidentially to at least one member of the public), and provided that publication has not taken place by other means, this official publication by the European Patent Office will constitute the first publication of the invention. Therefore, even if you have maintained confidentiality, in some (but not all) countries of the world applications for corresponding overseas patents cannot validly be filed after this official publication date. For details of which countries this rule would apply to, please contact a member of the firm.

However, although the official publication may prevent subsequent valid patent applications in many overseas countries, it will have the effect of establishing the date from which your European Patent rights can subsequently be enforced after the European patent is granted. This provisional protection between official publication and patent grant is generally subject to a translation of the claims of the application into a recognised national language of the Contracting State where the infringement takes place, either being filed in the national Patent Office of the country in which the provisional protection is required, or being served directly on the alleged infringer in that country.

To be granted, the application must successfully pass the substantive examination stage. Substantive examination must be initiated by the filing of a formal request for such examination and stating the countries for which the European patent is required (see Q2 above for a list of the available countries), within six months after the official publication mentioned above (limited extension available). In the examination stage, an Examiner of the European Patent Office is assigned to the application, and checks it thoroughly for compliance with all the patentability requirements of the European Patent Convention (see Q4 and Q5 above). If necessary, we will enter into correspondence with the Examiner, either to argue and explain that any misgivings the Examiner may have are unfounded, or to amend the application papers to cure any defects noted. The correspondence between us and the Examiner will be held on an open file in the European Patent Office, which members of the public may inspect.

In the event that agreement with the Examiner cannot be reached in correspondence, or in a telephone conversation or as a result of an informal meeting, a formal Hearing ("Oral Proceedings") can be held before the Examiner and two other Examiners, to try to resolve the matter. If agreement still cannot be reached, the application would be refused and you would have to appeal to the Boards of Appeal of the European Patent Office.

After the Examiner has accepted the application, a fairly lengthy "grant phase" must then be completed, to obtain grant of the European Patent and to register it before each national Patent Office in those designated countries in which protection is required. A considerable amount of translation work is needed during this grant phase, which can typically last around 12 to 18 months. This translation work is entirely at the applicant’s expense.

Within nine months after the date of grant of the European patent, any person may oppose the patent in the European Patent Office, in which case the validity of the patent will be examined in contested opposition proceedings.

The costs of each stage of the procedure will depend on the amount of work involved, as well as the official fees charged by the European Patent Office for the preliminary examination and search, and for the substantive examination. See Q14 below, for further information on likely costs.

The procedure is clearly staged, and the likely costs can be discussed at each stage in the process. At any stage, an application can be withdrawn if further expenditure is not felt to be warranted. The application would then be of no further effect, other than as a publication against later applications for protection of the same or a similar invention (assuming the official publication has taken place). Costs already incurred are not refundable, unless the substantive examination has not started when the application is withdrawn, in which case a partial refund of the substantive examination fee will be available.

It is also not possible to predict precisely how long the patenting procedure may take for any given application. For the reasons set out above, this will largely depend on the complexity of the substantive examination stage. Typically, however, the substantive examination would be completed between about 4 and 7 years from the priority or filing date, whichever is earlier. Unlike in the UK Patent Office, there is no time limit by which a European Patent application must be in order for grant.

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Q13. Which route should I select - national UK or European?

There is no right or wrong answer to this question. It must be judged on a case-by-case basis. The choice will be influenced by a number of factors, including which other countries may be of interest to you, both within and outside Europe.

A European patent is almost certain to be more expensive and slower to obtain than a national UK patent, although probably not more expensive than, say, the combined costs of obtaining national patents in a total of three or more different European countries. Costs are discussed more fully in Q14 below.

The examinations conducted by the European and the UK Patent Offices are supposed to follow the same criteria, but inevitably there may be differences. As a general rule, a search conducted by the European Patent Office is likely to be more thorough than a search conducted by the UK Patent Office. Therefore, if close prior art is available on a reasonably accessible database, it is more likely that this will be revealed in the European Patent Office search. This could make it more difficult to gain allowance of broad patent claims in the European Patent Office; whereas a corresponding UK patent application might be more readily granted and could appear to have broader effect if such (unrevealed) prior art was not considered during UK examination, but it could also be partially or wholly invalid as a consequence.

As far as other European countries are concerned, because we would handle all the filing and examination procedures in English before the European Patent Office - rather than having to appoint local patent attorneys as "middle men" to represent you (often in another language) before the relevant national Patent Offices in other Contracting States - the possibilities for misunderstandings are reduced, and the examination procedure is enormously simplified compared with the alternative option of dealing with individual national patent applications in various European countries. On the other hand, the examination conducted by national Patent Offices in Europe can be very much quicker and less stringent than that conducted by the European Patent Office, so that may justify selection of the national route in some cases.

Furthermore, some British Commonwealth countries do not maintain a fully examining Patent Office themselves, but register national UK or European Patents on application by the patent owner. If such countries are of interest, this may affect the choice of route.

There is nothing to prevent you applying both in the UK and European Patent Offices, but in that event you will ultimately need to select one of the resulting UK Patent or European Patent (UK) and abandon the other. Double patenting is not permitted.

Enforcement of national UK and European patents can involve differences in procedure. For example, the rules on jurisdiction to hear infringement actions differ as between UK and European patents. Whereas a Continental court may, in appropriate cases, have jurisdiction over infringement of a European patent that has been registered in the United Kingdom (usually abbreviated as "European Patent (UK)" or simply "EP(UK)"), this is much less likely in the case of a national UK patent. Therefore, the option for "forum shopping", in which the holder of a patent selects the Court most likely to be sympathetic and/or most likely to grant pan-European relief against an infringer, is a potential advantage more readily available with a European patent.

In conclusion, we would recommend that you should seek advice from a member of the firm on a case-by-case basis, when deciding which route to select for obtaining a patent in the United Kingdom.

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Q14. What are the cost implications of the two routes - national UK and European?

There are normally two factors to consider: the overall cost and the way in which the components of the overall cost are spread out during the patenting process.

It is generally impossible to predict the likely range for overall costs with any accuracy until at least the Search Report is received (giving an indication of whether close prior art exists), and even then there can be later surprises at examination or if a third party opposes grant (in the case of a European patent). Initially a budget of perhaps £5000 (US $7200)* should be allowed to cover the costs of prosecuting a relatively straightforward national patent application to grant in the UK, with those costs being spread over about 4 years (see Table below). As far as a European application is concerned, a budget of perhaps £8500 (US $13000) should be allowed to take the application through to grant, to which around £1600 (US $2400) would be added per additional country designated in the European application; again, this would represent a prudent initial budget for the overall cost of a relatively straightforward European patent, with costs typically spread over about 5 years (see Table below).

The cost-time (or cost-staging) profile in any particular case will depend on the speed of action of both the applicant and the relevant Patent Office, as well as whether other parties choose to intervene in the procedure (e.g. through an opposition). However, in general terms, the representative budgets might typically be spread over years 1-5 as shown below:

Representative spread of costs in Years 1-5 for prosecuting a typical patent application to grant

 Year

 National UK
 European
 Basic  Supplement (per designated country)
 1  £2000 ($2900)* £2900 ($4400)*  £0 ($0)
 2  £1000 ($1500) £1500 ($2300)  £100 ($150)
 3  £ 450 ($ 600)  £ 350 ($540)  £0 ($0)
 4  £1550 ($2300)  £ 2000($3000)  £0 ($0)
 5 [post-grant renewal fees] £ 2000 ($3000)  £1500 ($2300)

* In these figures £1500 ($2300) has been allowed for the cost of initial drafting and preparation of the description, claims, abstract and drawings of the invention. This figure should be subtracted if these papers are already prepared, e.g. if priority is claimed from an earlier basic patent application.

The above budgets are all subject to confirmation or revision, having regard to the facts of a particular case, and any changes in the scale and timing of official fees charged by the national UK and European Patent Offices. They assume no particular complexity; no more than ten claims in the application (additional fees are payable for more than ten claims in a European patent application); average speed of action both by the applicant and the Patent Office concerned; no division of the application (e.g. to answer an objection that more than one invention is claimed); no opposition against the patent (in the European Patent Office); and that no appeal is required against an adverse decision of an Examiner.

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Q15. How long does a patent last?

In Western Europe, patents can be kept in force for up to twenty years from their application date.

If the Priority system is invoked before a final patent application is filed (see Q9 above), the resulting patent could therefore finally expire twenty-one years after the basic application (from which priority was claimed) was filed.

Granted patents - and even pending patent applications, in some jurisdictions - must be kept in force by payment of annual renewal fees. If an annual renewal fee is not paid, the patent lapses and is of no further protective effect. The requirement to pay annual renewal fees to maintain a granted patent in force is universal in Western Europe, including the United Kingdom, and this is the same whether the patent is a national patent or a European patent that has been registered after grant in the country in question. The requirement to pay annual fees merely to maintain a pending patent application is not universal - for example, there is no such requirement in relation to national UK patent applications, whereas there is such a requirement for European patent applications.

Most clients take advantage of our renewal reminder system and instruct us to enter their patent application and grant dates on our computerised renewal diary, and to attend to renewal (after first having obtained instructions that renewal is still required) at the appropriate times.

If a patent relates to a pharmaceutical, veterinary or agrochemical invention, a Supplementary Protection Certificate (SPC) can be obtained in appropriate cases, allowing an extension of some of the effects of the patent for up to a further five years after the normal expiry date. (See UK Patent Office booklet entitled "Supplementary Protection Certificates for Medicinal Products and Plant Protection Products: A Guide for Applicants" for more information - .pdf version). If you would like specific advice on this possibility, please contact a member of the firm as soon as the official regulatory marketing approval is granted for a product covered by your patent. The prolongation would be effective only to the extent of the particular active pharmaceutical, veterinary or agrochemical agent for which official regulatory marketing approval has been granted, and the corresponding approved use(s). Thus, a Supplementary Protection Certificate protects only the specific marketed active agent covered by the patent (and not unapproved analogues or other agents which may also have been covered by the patent). The intention is thereby to compensate the patent owner to some extent for the delays typically encountered in obtaining the official regulatory marketing approval, but not to prevent other parties from marketing such analogues or other agents, if desired.

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Q16. What difference does it make if I use the PCT procedure initially?

The term of any eventual UK patent is not affected by whether the PCT procedure is used initially. In that event, the twenty years is calculated from the filing date of the International (PCT) Patent Application. However, whilst use of the PCT procedure has the advantage of allowing an applicant to defer the costs associated with filing and examination of patent applications, it usually also defers the date on which a patent is eventually granted, particularly in the normally relatively speedy Patent Offices such as the national UK Patent Office.

The procedures before the national UK Patent Office or the European Patent Office are fundamentally the same as explained in Q11 and Q12 above, except that the documentation required to file the application is simplified in the case of an application following on from the PCT route, and all the procedural stages that would normally have arisen in national Patent Offices during the period of deferral provided by the PCT route have to be complied with on filing of the national application(s) or the European application as these follow on from the PCT stages. In the European Patent Office, some discounts may be available in the official fees payable, depending on whether the searching and examination work already conducted in the PCT procedure can be re-used. The EPO publishes a Guide for applicants dealing with PCT procedure before the EPO - "Euro-PCT" (.pdf version).

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Q17. What about patents outside Europe?

There is no such thing as a "World Patent", and patents are still granted country-by-country in almost all cases, although there are a number of regional organisations, like the European Patent Organisation, which have centralised application procedures for member countries, including the Eurasian Patent Organisation, the African Regional Intellectual Property Organisation (ARIPO) and the African Intellectual Property Organisation (OAPI). However, as explained in Q9, the PCT System does allow for filing a single application which may designate any or all of the one hundred and more Contracting States of the Patent Cooperation Treaty. This offers significant advantages in deferring costs and decision points for patentees who may be initially uncertain about where to proceed. The PCT also provides the additional benefit that Contracting States must apply consistent requirements for entry of a PCT application into the national phase in a Contracting State. Our services include arranging for patent applications to be filed using the PCT, regional sytems or national routes in the appropriate jurisdictions and steering applications through their respective examination procedures to grant wherever the client requires.

An important patenting country outside Europe is the United States. The USA is a PCT Contracting State, but special legal rules and procedures apply in that country in the national phase (before the US Patent and Trademark Office), and specific advice should be obtained from a member of the firm, if you are considering patenting in the USA, or if you need advice concerning another party’s commercial or patenting activities there.

In particular, the following points should be noted regarding the USA:

- US law provides a twelve month grace period which European inventors often find useful. In essence, provided that a US patent application is filed within twelve months following the first non-confidential disclosure by an inventor, a valid US patent can normally still be obtained. This of course contrasts with European law, which gives no grace period to an inventor in those circumstances (see Q5 above);

- US law can be more generous to inventors than European law as regards the available range of patentable inventions in quasi-technical areas such as methods of medical treatment, computing, recreation and business management (see Q5 above).

- Where two independent inventors devise substantially the same invention at similar times, US law will recognise the superior legal rights of the first inventor, even if he did not apply for his patent first. This contrasts with European law, which gives no such recognition to a later applicant. However, this potential advantage of US law is dependent on the first inventor being able to prove what he did (and when) to a very high level of legal certainty. Please consult a member of the firm for specific advice on the extent and quality of inventors’ record-keeping and independent corroboration required, if you wish to secure the maximum potential rights for your invention in the United States.

It is important that a UK resident does not file any patent application outside the UK without having previously filed a corresponding patent application with the UK Patent Office, or without having first obtained formal clearance from the UK Patent Office. Unauthorised overseas patent filing is a criminal offence under the National Security and Safety provisions of Sections 22 and 23 of the Patents Act 1977. [See Q12 above].

Contact Us for further information on obtaining patents and patent-like rights (e.g. so-called petty patents, utility models etc.) in any countries of interest.

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Q18. What can happen if an invention is launched in the United Kingdom when it is already patented by someone else?

The short answer is anything ranging from (a) receiving a High Court Claim Form (formerly known as a writ) for patent infringement to (b) nothing whatsoever.

In other words, it largely depends on the motivation of the earlier patent owner. This will clearly depend on the actual effect of the unauthorised launch in the market, and whether such competition damages the business or business prospects of the owner of the earlier patent.

While it may sometimes be possible to resolve a dispute by concluding a licence agreement, this can never be relied on by a junior user, and the safest course of action is always to check beforehand whether you are free to launch a new product or process (see Q7 above).

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Q19. Can my patent be challenged after it has been granted?

Yes. Patents are granted with no guarantee of validity. If your patent is a European patent, any third party can institute opposition proceedings in the European Patent Office, within the period of nine months following the date of grant of the European patent, and that challenge to validity will be judged by the European Patent Office Opposition Division. The loser in those opposition proceedings has the right of appeal to the Boards of Appeal of the European Patent Office, but not to any national Court. However, if the opponent loses and the European patent is maintained, separate national challenges can still be started later (see the next paragraph).

National UK patents and European (UK) patents can be challenged at any time via national proceedings in the United Kingdom. Such proceedings may be instituted either in the UK Patent Office or in the Patents Court, which is part of the High Court (Chancery Division), at the choice of the challenger. The loser in any UK Patent Office proceedings can appeal to the Patents Court, and the loser in the Patents Court can then appeal to the Court of Appeal and possibly to the House of Lords.

Validity can also be challenged by way of a counterclaim in an action for patent infringement. Indeed, this is the usual circumstance where validity of a patent would be challenged.

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Q20. How do I use my patent to stop unauthorised commercial use of my invention?

You should always seek professional advice before making any approach to an unauthorised user.

To start with, we would normally notify the unauthorised user of the existence of the patent and ask for the user’s comments within a short reply period. If those comments do not lead directly into settlement discussions, you would need to consider whether to sue the unauthorised user for patent infringement. The remedies available in such an action, provided that the patent is valid and has been infringed, would normally include:

i) an injunction (restraining order);

ii) an award of damages (compensation);

iii) an order for delivery-up or destruction of infringing products in the infringer’s possession;

iv) an order to compensate your legal costs; and

v) ancillary orders such as disclosure of details of suppliers and customers, if appropriate.

In urgent cases, pre-action or pre-trial (interim) orders, including restraining and search orders, may be available. In appropriate cases it is also possible to use Customs procedures to seize infringing goods at entry ports. If criminal offences are being committed by an infringer, action by the Police or Trading Standards Authorities may be possible.

Civil court procedures can be instituted in either the Patents Court or the Patents County Court, and the loser would have the right of appeal to the Court of Appeal. Action against a Scottish user would be taken in the corresponding Scottish Courts (the Outer House of the Court of Session, the decision of which may be appealed to the Inner House of the Court of Session).

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Q21. Are there any rules for how I should use my invention?

You should mark your product and literature with details of the relevant UK patent application or granted patent that you own. The details must be accurate and should preferably quote the application or patent number.

If you intend to licensing the invention for others to use, please refer to the Licensing section of our web-site for guidelines on the issues involved.

If you are an inventor with no existing manufacturing or distribution/ sales facilities, we may be able to direct you to sources of relevant advice and services including development of business plans, seeking finance and grants, company formation, etc.   However, we ourselves do not advise in these areas.

Always remember that any discussions with others must be strictly confidential, at least until a patent application has been filed.

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Q22. What do you need to file a UK or European patent application for my invention?

For a basic UK or European Patent Application we need:

- a detailed description of the invention, including appropriate explanatory drawings and diagrams; the description must identify the essential features of your invention; ideally the description should:

- identify the particular problem(s) the invention is intended to solve or address and/or the advantage(s) it offers over what is pr