What is a European patent
A European patent is a patent granted by the European Patent Office (EPO) under the European Patent Convention. With a single application in one of the official languages, that is English, German, or French, you can obtain protection for an invention in more than thirty contracting states at once, instead of a separate application in each country.
The purpose of the Convention is to make the protection of inventions in all contracting states simpler, cheaper, and more reliable. A grant can be requested for one, several, or all contracting states. The application may be filed by a natural or a legal person, and the right of priority from an earlier application can be claimed. A European patent can also be obtained through an international PCT application, by what is known as the Euro-PCT route.
The proceedings have two phases. First comes a formal examination and a prior-art search, followed by substantive examination of novelty and inventive step. From filing to grant, three to five years usually elapse. The patent is valid for up to 20 years from the filing date of the application, subject to payment of maintenance fees.
Once granted, the patent enjoys in each designated state essentially the same protection as a national patent granted in that country. To take effect in a particular state, it usually needs to be validated. Since 2023, there is also the unitary patent, which makes it possible to obtain unified protection in most European Union countries through a single act, without validation in each state separately.
