| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| Australes Et Antarctiques | Extension | 03/09/1971 | |
| BELGIUM | Signature | 02/12/1961 | |
| BELGIUM | Ratification | 05/11/1976 | 05/12/1976 |
| BELGIUM | Declaration | 12/04/1979 | |
| CHILE | Accession | 05/12/1995 | 05/01/1996 |
| COSTA RICA | Accession | 12/12/2008 | 12/01/2009 |
| CZECH REPUBLIC | Accession | 24/10/2002 | 24/11/2002 |
| DENMARK | Signature | 26/11/1962 | |
| DENMARK | Ratification | 06/09/1968 | |
| DENMARK | Declaration | 06/09/1968 | |
| FRANCE | Signature | 02/12/1961 | |
| FRANCE | Ratification | 03/09/1971 | |
| FRANCE | Declaration | 03/09/1971 | |
| French Guiana | Extension | 03/09/1971 | |
| French Polynesia | Extension | 03/09/1971 | |
| GEORGIA | Accession | 29/10/2008 | 29/11/2008 |
| GERMANY FEDERAL REPUBLIC | Signature | 02/12/1961 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 11/07/1968 | |
| GERMANY FEDERAL REPUBLIC | Declaration | 11/07/1968 | |
| GERMANY FEDERAL REPUBLIC | Declaration | 12/01/1976 | |
| GERMANY FEDERAL REPUBLIC | Declaration | 07/06/1979 | |
| GERMANY FEDERAL REPUBLIC | Declaration | 17/11/1980 | |
| Guadeloupe | Extension | 03/09/1971 | |
| ISRAEL | Accession | 12/11/1979 | 12/11/1979 |
| ITALY | Signature | 02/12/1961 | |
| ITALY | Declaration | 02/12/1961 | |
| ITALY | Ratification | 01/06/1977 | 01/07/1977 |
| ITALY | Declaration | 16/12/1980 | |
| JORDAN | Accession | 24/09/2004 | 24/10/2004 |
| KOREA REPUBLIC OF | Accession | 07/12/2001 | 07/01/2002 |
| LATVIA | Accession | 30/07/2002 | 30/08/2002 |
| Martinique | Extension | 03/09/1971 | |
| NETHERLANDS THE | Signature | 02/12/1961 | |
| NETHERLANDS THE | Ratification | 08/08/1967 | |
| NETHERLANDS THE | Declaration | 01/01/1986 | |
| New Caledonia | Extension | 03/09/1971 | |
| PANAMA | |||
| POLAND | Accession | 15/07/2003 | 15/08/2003 |
| Reunion | Extension | 03/09/1971 | |
| SLOVAK REPUBLIC | Accession | 12/05/2009 | 12/06/2009 |
| SOUTH AFRICA | Accession | 07/10/1977 | 06/11/1977 |
| SPAIN | Accession | 18/04/1980 | 18/05/1980 |
| SPAIN | Declaration | 18/04/1980 | |
| SPAIN | Notification | 12/07/1982 | |
| SPAIN | Notification | 04/07/1985 | |
| St Pierre and Miquelon | Extension | 03/09/1971 | |
| SWEDEN | Accession | 17/11/1971 | 17/12/1971 |
| SWITZERLAND | Signature | 30/11/1962 | |
| SWITZERLAND | Ratification | 10/06/1977 | |
| TUNISIA | Accession | 31/08/2003 | 01/01/1900 |
| UKRAINE | Reservation | 03/10/1993 | |
| UKRAINE | Accession | 30/08/1995 | 03/11/1995 |
| UKRAINE | Declaration | 03/10/1995 | |
| UNITED KINGDOM | Signature | 26/11/1962 | |
| UNITED KINGDOM | Ratification | 17/09/1965 | |
| UNITED KINGDOM | Membership | 10/08/1968 | |
| UNITED KINGDOM | Communication | 31/07/2003 | 03/01/1999 |
| Wallis And Futuna Islands | Extension | 03/09/1971 |