| 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 | 26-07-1957 | 02-10-1957 (R) | 02-10-1957 | |||
| Belgium | 15-12-1956 | 05-06-1972 (R) | 05-06-1972 | |||
| Bosnia and Herzegovina | 29-12-1994 (Su) | 06-03-1992 | ||||
| Croatia | 27-01-1993 (Su) | 08-10-1991 | ||||
| Cyprus | 18-09-1970 | |||||
| Czech Republic | 01-01-1993 (Su) | 01-01-1993 | ||||
| Czechoslovakia (<01-01-1993) | 26-03-1991 | 26-03-1991 (R) | 26-03-1991 | |||
| Denmark | 15-12-1956 | 23-06-1958 (R) | 23-06-1958 | |||
| Estonia | 14-05-1993 | |||||
| Finland | 16-09-1991 | 16-09-1991 (R) | 16-09-1991 | |||
| France | 15-12-1956 | 19-02-1958 (R) | 19-02-1958 | |||
| Germany | 15-12-1956 | 08-12-1964 (R) | 08-12-1964 | |||
| Greece | 16-09-1960 | |||||
| Hungary | 03-02-1992 | |||||
| Iceland | 15-12-1956 | 05-04-1963 (R) | 05-04-1963 | |||
| Ireland | 15-12-1956 | 20-02-1957 (R) | 18-09-1957 | |||
| Italy | 15-12-1956 | 29-03-1958 (R) | 29-03-1958 | |||
| Liechtenstein | 22-05-1991 | 22-05-1991 (R) | 22-05-1991 | |||
| Luxembourg | 15-12-1956 | 23-01-1968 (R) | 23-01-1968 | |||
| Malta | 22-09-1967 | 07-05-1968 (R) | 07-05-1968 | |||
| Netherlands, the Kingdom of the | 15-12-1956 | 10-12-1959 (R) | 10-12-1959 | |||
| North Macedonia | 30-03-1994 (Su) | 17-09-1991 | ||||
| Norway | 15-12-1956 | 14-03-1957 (R) | 18-09-1957 | |||
| Poland | 11-07-1994 | 10-10-1994 (R) | 10-10-1994 | |||
| Portugal | 27-04-1978 | 08-09-1982 (R) | 08-09-1982 | |||
| Romania | 02-10-1995 | 19-05-1998 (R) | 19-05-1998 | |||
| Russian Federation | 07-11-1996 | 17-09-1999 (R) | 17-09-1999 | |||
| Slovakia | 01-01-1993 (Su) | 01-01-1993 | ||||
| Slovenia | 02-07-1992 (Su) | 25-06-1991 | ||||
| Spain | 25-04-1975 (A) | 25-04-1975 | ||||
| Sweden | 15-12-1956 | 21-06-1967 (R) | 21-06-1967 | |||
| Switzerland | 25-04-1991 | 25-04-1991 (R) | 25-04-1991 | |||
| Türkiye | 25-09-1957 | 18-02-1960 (R) | 18-02-1960 | |||
| United Kingdom | 15-12-1956 | 18-09-1957 (R) | 18-09-1957 | |||
| Yugoslavia (< 25-06-1991) | 15-09-1977 (A) | 15-09-1977 |