| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| Algeria | Extension | 24/03/1961 | |
| ALGERIA | Accession | 24/03/1972 | 05/07/1972 |
| BOSNIA AND HERZEGOVINA | Accession | 22/06/2013 | |
| BULGARIA | Accession | 29/04/1975 | 12/08/1975 |
| CUBA | Signature | 31/10/1958 | |
| CUBA | Accession | 24/07/1964 | 11/10/1964 |
| CZECH REPUBLIC | Accession | 18/12/1992 | 01/01/1993 |
| CZECHOSLOVAKIA | Accession | 12/08/1961 | |
| EGYPT | Accession | 03/12/1974 | 06/03/1975 |
| FRANCE | Signature | 31/10/1958 | |
| FRANCE | Ratification | 24/03/1961 | |
| French Guiana | Extension | 24/03/1961 | |
| GERMAN DEMOCRATIC REPUBLIC | Accession | 23/09/1964 | 15/01/1965 |
| GERMANY FEDERAL REPUBLIC | Signature | 31/10/1958 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 28/07/1961 | |
| Guadeloupe | Extension | 24/03/1961 | |
| HUNGARY | Signature | 31/10/1958 | |
| HUNGARY | Accession | 29/12/1966 | |
| HUNGARY | Declaration | 29/12/1966 | |
| IRAN | Accession | 18/03/2004 | 18/06/2004 |
| IRELAND, REPUBLIC OF | Signature | 31/10/1958 | |
| IRELAND, REPUBLIC OF | Accession | 09/06/1967 | |
| ISRAEL | Signature | 31/10/1958 | |
| ISRAEL | Accession | 02/07/1967 | |
| ITALY | Signature | 31/10/1958 | |
| ITALY | Accession | 15/08/1968 | 29/12/1968 |
| JAPAN | Signature | 31/10/1958 | |
| JAPAN | Accession | 21/08/1965 | |
| LIECHTENSTEIN | Signature | 31/10/1958 | |
| LIECHTENSTEIN | Accession | 17/02/1972 | 10/04/1972 |
| Martinique | Extension | 24/03/1961 | |
| Metropolitan | Extension | 24/03/1961 | |
| MOLDOVA REPUBLIC OF | Accession | 05/01/2001 | 05/04/2001 |
| MONACO | Signature | 31/10/1958 | |
| MONACO | Ratification | 10/10/1961 | |
| MOROCCO | Signature | 31/10/1958 | |
| MOROCCO | Accession | 15/05/1967 | |
| NEW ZEALAND | Signature | 31/10/1958 | |
| POLAND | Signature | 31/10/1958 | |
| PORTUGAL | Signature | 31/10/1958 | |
| Reunion | Extension | 24/03/1961 | |
| Sahara | Extension | 24/03/1961 | |
| SAN MARINO | Accession | 26/03/1991 | 26/06/1991 |
| SERBIA AND MONTENEGRO | Accession | 18/02/2000 | 18/05/2000 |
| SLOVAKIA | Accession | 30/12/1992 | 01/01/1993 |
| SPAIN | Signature | 31/10/1958 | |
| SPAIN | Accession | 08/05/1973 | 14/08/1973 |
| SWEDEN | Signature | 31/10/1958 | |
| SWEDEN | Accession | 14/08/1969 | 03/10/1969 |
| SWITZERLAND | Signature | 31/10/1958 | |
| SWITZERLAND | Ratification | 17/01/1963 | |
| UNITED KINGDOM | Signature | 31/10/1958 | |
| UNITED KINGDOM | Ratification | 06/09/1961 |