How to file an international patent

Patents are territorial and only provide protection in the country in which they are granted. This means that you must file separate patent applications in each country where protection is required. There are options for making the process of obtaining multiple international patents more straightforward, efficient and cost-effective.

As well as directly handling the filing and examination of UK, European and International (PCT) applications, we work closely with carefully chosen overseas attorneys to obtain patents outside these jurisdictions. We’ve protected IP in virtually every territory in the world where patent protection is available.

Once you’ve filed a UK patent application, there is a 12-month window in which to file additional applications outside the UK. If filed within this window, the overseas applications will be back-dated to the same filing date as your UK application — this is referred to as claiming ‘priority’.

There are three routes for obtaining protection outside the UK:

  • National application

You can file separate national patent applications in each country where protection is required.

  • PCT application

An international patent application, referred to as a ‘PCT’ application, provides provisional patent protection worldwide. However, this application is time-limited and after 30 months, national applications must be filed in each country in which protection is required, and protection in the remaining countries lapses.

  • European patent application

A single patent application filed at the European Patent Office (EPO) provides patent protection in almost all European countries.

How we can help

Our attorneys are qualified European practitioners, able to act for you at the European Patent Office and to file PCT applications. If protection is required outside of Europe, our network of carefully chosen overseas attorneys means we’re able to file patent applications in any country in the world which has a patent system. Depending on the countries required, we can advise on the most suitable and efficient filing strategy to obtain the necessary geographical coverage.

Some of our team

Dr Garry Stuttard

Partner - Patents

Dr Simon Mitchell

Partner - Patents

Simon Raynor

Partner - Patents

Get in touch

Fill out our contact form and one of our team will be in touch.

Alternatively, you can contact us directly and speak to a member of our specialist team.

+44 330 107 5077

Enquiry Type (Optional)

Specifying your location will help us to find the right attorney for you

Please tell us a bit more about where you heard about us

For information about what we do with your personal data please see our Privacy Policy.

Website by Extreme