| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| ALBANIA | Accession | 25/06/1992 | 25/06/1992 |
| ANDORRA | Signature | 10/11/1994 | |
| ANDORRA | Ratification | 22/01/1996 | 22/01/1996 |
| ARMENIA | Accession | 25/04/1997 | 05/05/1997 |
| AUSTRIA | Signature | 13/12/1957 | |
| AUSTRIA | Ratification | 04/03/1958 | 04/03/1958 |
| AZERBAIJAN | Accession | 25/04/1997 | 05/05/1997 |
| BELARUS | Accession | 18/10/1993 | 18/10/1993 |
| BELGIUM | Signature | 19/12/1954 | |
| BELGIUM | Ratification | 11/05/1955 | 11/05/1955 |
| BOSNIA AND HERZEGOVINA | Accession | 29/12/1994 | 29/12/1994 |
| BULGARIA | Accession | 02/09/1991 | 02/09/1991 |
| CROATIA | Accession | 27/01/1993 | 27/01/1993 |
| CYPRUS | Ratification | 23/09/1967 | 23/09/1967 |
| CYPRUS | Signature | 30/11/1967 | |
| CZECH REPUBLIC | Succession | 08/01/1993 | 01/01/1993 |
| CZECHOSLOVAKIA | Accession | 10/05/1990 | 10/05/1990 |
| DENMARK | Signature | 19/12/1954 | |
| DENMARK | Ratification | 07/05/1955 | 07/05/1955 |
| ESTONIA | Accession | 07/05/1992 | 07/05/1992 |
| FINLAND | Accession | 23/01/1970 | 23/01/1970 |
| FRANCE | Signature | 19/12/1954 | |
| FRANCE | Ratification | 19/03/1955 | 05/05/1955 |
| GEORGIA | Accession | 25/04/1997 | 05/05/1997 |
| GERMANY FEDERAL REPUBLIC | Signature | 19/12/1954 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 17/11/1955 | 17/11/1955 |
| GERMANY FEDERAL REPUBLIC | Declaration | 17/11/1955 | |
| Gibraltar | Extension | 27/05/1998 | 27/05/1998 |
| GREECE | Signature | 19/12/1954 | |
| GREECE | Ratification | 10/01/1962 | 10/01/1962 |
| HOLY SEE | Accession | 10/12/1962 | 10/12/1962 |
| HUNGARY | Accession | 16/11/1989 | 16/11/1989 |
| ICELAND | Signature | 19/12/1954 | |
| ICELAND | Ratification | 01/03/1956 | 01/03/1956 |
| IRELAND, REPUBLIC OF | Signature | 19/12/1954 | |
| IRELAND, REPUBLIC OF | Ratification | 11/03/1955 | 05/05/1955 |
| Isle of Man | Extension | 28/01/1994 | |
| ITALY | Signature | 19/12/1954 | |
| ITALY | Ratification | 16/05/1957 | 16/05/1957 |
| Jersey, Bailiwick of | Extension | 19/03/1999 | 19/03/1999 |
| KAZAKHSTAN | Accession | 05/03/2010 | 05/03/2010 |
| Land Berlin | Extension | 17/11/1955 | |
| LATVIA | Accession | 07/05/1992 | 07/05/1992 |
| LIECHTENSTEIN | Signature | 23/11/1978 | |
| LIECHTENSTEIN | Ratification | 13/06/1979 | 13/06/1979 |
| LITHUANIA | Accession | 07/05/1992 | 07/05/1992 |
| LUXEMBOURG | Signature | 19/12/1954 | |
| LUXEMBOURG | Ratification | 30/07/1956 | 30/07/1956 |
| MACEDONIA THE FYR OF | Accession | 24/11/1995 | 24/11/1995 |
| MALTA | Signature | 02/05/1966 | |
| MALTA | Ratification | 12/12/1966 | 12/12/1966 |
| MOLDOVA REPUBLIC OF | Accession | 24/05/1994 | 24/05/1994 |
| MONACO | Accession | 06/07/1994 | 06/07/1994 |
| NETHERLANDS THE | Signature | 19/12/1954 | |
| NETHERLANDS THE | Ratification | 08/02/1956 | 08/02/1956 |
| NORWAY | Signature | 19/12/1954 | |
| NORWAY | Ratification | 24/01/1956 | 24/01/1956 |
| POLAND | Accession | 16/11/1989 | 16/11/1989 |
| PORTUGAL | Accession | 16/02/1976 | 16/02/1976 |
| ROMANIA | Accession | 19/12/1991 | 19/12/1991 |
| SAN MARINO | Accession | 13/02/1986 | 13/02/1986 |
| SLOVAK REPUBLIC | Succession | 08/01/1993 | 01/01/1993 |
| SLOVENIA | Accession | 02/07/1992 | 02/07/1992 |
| SOVIET UNION | Accession | 21/02/1991 | 21/02/1991 |
| SPAIN | Accession | 04/07/1957 | 04/07/1957 |
| SWEDEN | Signature | 19/12/1954 | |
| SWEDEN | Ratification | 16/06/1958 | 16/06/1958 |
| SWITZERLAND | Accession | 13/07/1962 | 13/07/1962 |
| SWITZERLAND | Reservation | 13/07/1962 | |
| TURKEY | Signature | 19/12/1954 | |
| TURKEY | Ratification | 10/10/1957 | 10/10/1957 |
| UKRAINE | Accession | 13/06/1994 | 13/06/1994 |
| UNITED KINGDOM | Signature | 19/12/1954 | |
| UNITED KINGDOM | Ratification | 05/05/1955 | |
| UNITED KINGDOM | Declaration | 27/05/1998 | |
| UNITED KINGDOM | Declaration | 19/03/1999 | |
| YUGOSLAVIA | Accession | 07/10/1987 | 07/10/1987 |
| YUGOSLAVIA, FEDERAL REPUBLIC OF | Accession | 28/02/2001 | 28/02/2001 |