| Contracting Party | Signature | Instrument | In Force | Details |
|---|
| Albania | | Accession: July 24, 2006 | July 24, 2007 | |
| Argentina | | Accession: September 13, 2007 | September 13, 2008 | |
| Armenia | | Accession: December 6, 2004 | December 6, 2005 | |
| Australia | | Accession: November 7, 1974 | November 12, 1975 | Details |
| Austria | September 9, 1971 | Ratification: July 3, 1974 | October 7, 1975 | |
| Azerbaijan | | Accession: July 14, 2003 | July 14, 2004 | |
| Belarus | | Accession: March 12, 1998 | March 12, 1999 | |
| Belgium | March 24, 1971 | Ratification: June 30, 1975 | July 4, 1976 | Details |
| Bosnia and Herzegovina | | Accession: October 27, 2008 | October 27, 2009 | |
| Brazil | June 28, 1971 | Ratification: October 3, 1974 | October 7, 1975 | |
| Bulgaria | | Accession: November 27, 2000 | November 27, 2001 | |
| Canada | | Accession: January 11, 1995 | January 11, 1996 | |
| China | | Accession: June 17, 1996 | June 19, 1997 | Details |
| Croatia | | Accession: November 25, 1999 | November 25, 2000 | |
| Cuba | | Accession: November 9, 1995 | November 9, 1996 | |
| Czech Republic | | Declaration of Continued Application: December 18, 1992 | January 1, 1993 | Details |
| Democratic People's Republic of Korea | | Accession: November 21, 2001 | November 21, 2002 | |
| Denmark | March 24, 1971 | Ratification: January 9, 1973 | October 7, 1975 | |
| Egypt | | Accession: October 8, 1974 | October 17, 1975 | |
| Estonia | | Accession: February 24, 1996 | February 27, 1997 | |
| Finland | March 24, 1971 | Ratification: May 14, 1975 | May 16, 1976 | Details |
| France | September 20, 1971 | Ratification: November 16, 1972 | October 7, 1975 | Details |
| Germany | March 24, 1971 | Ratification: July 13, 1973 | October 7, 1975 | Details |
| Greece | March 24, 1971 | Ratification: October 21, 1996 | October 21, 1997 | |
| Guinea | | Accession: August 5, 1996 | August 5, 1997 | Details |
| Holy See | March 24, 1971 | | | |
| Iran (Islamic Republic of) | June 22, 1971 | | | |
| Ireland | | Accession: April 19, 1972 | October 7, 1975 | Details |
| Israel | | Accession: October 7, 1974 | October 7, 1975 | |
| Italy | March 24, 1971 | Ratification: March 28, 1979 | March 30, 1980 | Details |
| Japan | September 13, 1971 | Ratification: August 16, 1976 | August 18, 1977 | |
| Kazakhstan | | Accession: January 24, 2002 | January 24, 2003 | |
| Kyrgyzstan | | Accession: September 10, 1998 | September 10, 1999 | |
| Liechtenstein | March 24, 1971 | | | |
| Luxembourg | March 24, 1971 | Ratification: April 6, 1976 | April 9, 1977 | Details |
| Malawi | | Accession: July 24, 1995 | July 24, 1996 | |
| Mexico | | Accession: October 26, 2000 | October 26, 2001 | |
| Monaco | September 27, 1971 | Ratification: June 10, 1975 | June 13, 1976 | Details |
| Mongolia | | Accession: March 16, 2001 | March 16, 2002 | |
| Montenegro | | Accession: January 6, 2012 | January 6, 2013 | |
| Netherlands | September 22, 1971 | Ratification: September 13, 1974 | October 7, 1975 | Details |
| Norway | March 24, 1971 | Ratification: January 30, 1973 | October 7, 1975 | Details |
| Poland | | Accession: December 4, 1996 | December 4, 1997 | |
| Portugal | | Accession: April 28, 1978 | May 1, 1979 | |
| Republic of Korea | | Accession: October 8, 1998 | October 8, 1999 | |
| Republic of Moldova | | Accession: September 1, 1997 | September 1, 1998 | |
| Romania | | Accession: March 31, 1998 | March 31, 1999 | |
| Russian Federation | | Accession: September 30, 1975 | October 3, 1976 | Details |
| Serbia | March 24, 1971 | Ratification: July 15, 2009 | July 15, 2010 | Details |
| Slovakia | | Declaration of Continued Application: December 30, 1992 | January 1, 1993 | Details |
| Slovenia | | Accession: May 10, 2001 | May 10, 2002 | |
| Spain | March 24, 1971 | Ratification: November 26, 1974 | November 29, 1975 | Details |
| Suriname | | Declaration of Continued Application: November 16, 1976 | November 25, 1975 | Details |
| Sweden | March 24, 1971 | Ratification: May 17, 1973 | October 7, 1975 | |
| Switzerland | March 24, 1971 | Ratification: December 20, 1972 | October 7, 1975 | |
| Tajikistan | | Declaration of Continued Application: February 14, 1994 | December 25, 1991 | Details |
| the former Yugoslav Republic of Macedonia | | Accession: May 30, 2002 | May 30, 2003 | |
| Trinidad and Tobago | | Accession: December 20, 1995 | December 20, 1996 | |
| Turkey | | Accession: October 1, 1995 | October 1, 1996 | |
| Turkmenistan | | Accession: March 7, 2006 | March 7, 2007 | |
| Ukraine | | Accession: April 7, 2009 | April 7, 2010 | |
| United Kingdom | March 24, 1971 | Ratification: May 26, 1972 | October 7, 1975 | Details |
| United States of America | March 24, 1971 | Ratification: December 21, 1973 | October 7, 1975 | |
| Uruguay | | Accession: October 19, 1999 | October 19, 2000 | |
| Uzbekistan | | Accession: October 12, 2001 | October 12, 2002 | |
