https://www.epo.org/en/node/where-patent-valid-and-how-long-does-it-last
Where is a patent valid and how long does it last?
A patent is valid in the particular country in which it is granted and for a certain period of time, generally 20 years from the date of filing the patent application.
Further information on patentability can be found in the European Patent Guide, Chapter 3 ‒ Patentability.
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