By August 1, 2023, the following (54) States/Organizations were parties to this Treaty:
- Afghanistan
- Armenia
- Australia
- Belarus
- Belgium
- Benelux
- Benin
- Bulgaria
- Canada
- Croatia
- Denmark
- Estonia
- Finland
- France
- Germany
- Iceland
- Iraq
- Ireland
- Italy
- Japan
- Kazakhstan
- Korea (North)
- Korea (South)
- Kyrgyzstan
- Latvia
- Liechtenstein
- Lithuania
- Luxembourg
- Mali
- Moldova
- Mongolia
- Montenegro
- Morocco
- Netherlands*
- New Zealand
- North Macedonia
- OAPI
- Norway
- Peru
- Poland
- Romania
- Russian Federation
- Serbia
- Singapore
- Slovakia
- Spain
- Sweden
- Switzerland
- Tajikistan
- Trinidad and Tobago
- Ukraine
- United Kingdom
- United States of America
- Uruguay.
* extended to Curaçao, Sint Maarten and BES Islands.