By October 1, 2022, the Convention had been ratified by the following (39) States:

  • Albania*
  • Austria
  • Belgium*
  • Bulgaria
  • Croatia*
  • Cyprus
  • Czech Republic
  • Denmark*
  • Estonia
  • Finland*
  • France*
  • Germany*
  • Greece
  • Hungary*
  • Iceland*
  • Ireland*
  • Italy
  • Latvia*
  • Liechtenstein*
  • Lithuania*
  • Luxembourg*
  • Malta
  • Monaco*
  • Montenegro
  • Netherlands*
  • North Macedonia*
  • Norway*
  • Poland
  • Portugal
  • Romania
  • San Marino
  • Serbia
  • Slovakia
  • Slovenia*
  • Spain
  • Sweden*
  • Switzerland*
  • Türkiye
  • United Kingdom*.

Extension of a European patent (1 State): Bosnia and Herzegovina.

Validation of a European patent (4 States): Cambodia, Moldova,  Morocco,  Tunisia.

* Members of the London Agreement (22 States).