| Party | Signature | Provisional application |
RatificationS=Signature without reservation or requirement of ratification R=Ratification, Acceptance, Approval or Notification A=Accession Su=Succession NK=Not Known | Entry into force | Renunciation | Termination |
|---|---|---|---|---|---|---|
| Austria | 20-04-1971 | 28-06-1985 (R) | 29-07-1985 | |||
| Belgium | 03-06-1964 | 05-06-1972 (R) | 06-07-1972 | |||
| Bosnia and Herzegovina | 29-12-1994 (Su) | 06-03-1992 | ||||
| Croatia | 27-01-1993 (Su) | 08-10-1991 | ||||
| Cyprus | 01-03-2006 | 01-03-2006 (R) | 02-04-2006 | |||
| Czech Republic | 01-01-1993 (Su) | 01-01-1993 | ||||
| Czechoslovakia (<01-01-1993) | 26-03-1991 | 26-03-1991 (R) | 27-04-1991 | |||
| Denmark | 03-06-1964 (S) | 04-07-1964 | ||||
| Finland | 16-09-1991 | 16-09-1991 (R) | 17-10-1991 | |||
| France | 03-06-1964 (S) | 04-07-1964 | ||||
| Germany | 03-06-1964 | 23-07-1971 (R) | 24-08-1971 | |||
| Greece | ||||||
| Italy | 03-06-1964 | 20-09-1966 (R) | 21-10-1966 | |||
| Liechtenstein | 22-05-1991 | 22-05-1991 (R) | 23-06-1991 | |||
| Luxembourg | 03-06-1964 | 30-11-1965 (R) | 31-12-1965 | |||
| Malta | 16-11-1988 | 26-03-1991 (R) | 27-04-1991 | |||
| Netherlands, the Kingdom of the | 03-06-1964 | 21-01-1965 (R) | 22-02-1965 | |||
| New Zealand | 20-07-1978 (A) | 21-08-1978 | ||||
| North Macedonia | 30-03-1994 (Su) | 17-11-1991 | ||||
| Norway | 03-06-1964 (S) | 04-07-1964 | ||||
| Poland | 11-07-1994 | 10-10-1994 (R) | 11-11-1994 | |||
| Portugal | 27-04-1978 | 03-11-1981 (R) | 04-12-1981 | |||
| Romania | 02-10-1995 | 19-05-1998 (R) | 20-06-1998 | |||
| Russian Federation | 19-02-1998 | 17-09-1999 (R) | 18-10-1999 | |||
| Slovakia | 01-01-1993 (Su) | 01-01-1993 | ||||
| Slovenia | 02-07-1992 (Su) | 25-06-1991 | ||||
| Sweden | 21-06-1967 (S) | 22-07-1967 | ||||
| Switzerland | 25-04-1991 | 25-04-1991 (R) | 26-05-1991 | |||
| Türkiye | 27-11-1964 | |||||
| United Kingdom | 25-08-1964 (S) | 26-09-1964 | ||||
| Yugoslavia (< 25-06-1991) | 15-09-1977 (A) | 16-10-1977 |