| Contracting Party | Signature | Instrument | In Force | Details |
|---|
| Albania | | Accession: September 15, 2005 | October 15, 2005 | Details |
| Argentina | | Accession: November 25, 1994 | December 25, 1994 | Details |
| Australia | | Accession: February 1, 1989 | March 1, 1989 | Details |
| Austria | | Accession: June 14, 1994 | July 14, 1994 | Details |
| Azerbaijan | | Accession: November 9, 2004 | December 9, 2004 | Details |
| Belarus | | Accession: December 5, 2002 | January 5, 2003 | Details |
| Belgium | December 2, 1961 | Ratification: November 5, 1976 | December 5, 1976 | Details |
| Bolivia (Plurinational State of) | | Accession: April 21, 1999 | May 21, 1999 | |
| Brazil | | Accession: April 23, 1999 | May 23, 1999 | Details |
| Bulgaria | | Accession: March 24, 1998 | April 24, 1998 | Details |
| Canada | | Accession: February 4, 1991 | March 4, 1991 | Details |
| Chile | | Accession: December 5, 1995 | January 5, 1996 | Details |
| China | | Accession: March 23, 1999 | April 23, 1999 | Details |
| Colombia | | Accession: August 13, 1996 | September 13, 1996 | Details |
| Costa Rica | | Accession: December 12, 2008 | January 12, 2009 | Details |
| Croatia | | Accession: August 1, 2001 | September 1, 2001 | Details |
| Czech Republic | | Declaration of Continued Application: January 12, 1993 | January 1, 1993 | Details |
| Denmark | November 26, 1962 | Ratification: September 6, 1968 | October 6, 1968 | Details |
| Dominican Republic | | Accession: May 16, 2007 | June 16, 2007 | Details |
| Ecuador | | Accession: July 8, 1997 | August 8, 1997 | Details |
| Estonia | | Accession: August 24, 2000 | September 24, 2000 | Details |
| European Union (EU) | | Accession: June 29, 2005 | July 29, 2005 | Details |
| Finland | | Accession: March 16, 1993 | April 16, 1993 | Details |
| France | December 2, 1961 | Ratification: September 3, 1971 | October 3, 1971 | Details |
| Georgia | | Accession: October 29, 2008 | November 29, 2008 | Details |
| Germany | December 2, 1961 | Ratification: July 11, 1968 | August 10, 1968 | Details |
| Hungary | | Accession: March 16, 1983 | April 16, 1983 | Details |
| Iceland | | Accession: April 3, 2006 | May 3, 2006 | Details |
| Ireland | | Accession: May 19, 1981 | November 8, 1981 | Details |
| Israel | | Accession: November 12, 1979 | December 12, 1979 | Details |
| Italy | December 2, 1961 | Ratification: June 1, 1977 | July 1, 1977 | Details |
| Japan | | Acceptance: August 3, 1982 | September 3, 1982 | Details |
| Jordan | | Accession: September 24, 2004 | October 24, 2004 | Details |
| Kenya | | Accession: April 13, 1999 | May 13, 1999 | Details |
| Kyrgyzstan | | Accession: May 26, 2000 | June 26, 2000 | Details |
| Latvia | | Accession: July 30, 2002 | August 30, 2002 | Details |
| Lithuania | | Accession: November 10, 2003 | December 10, 2003 | Details |
| Mexico | | Accession: July 9, 1997 | August 9, 1997 | Details |
| Morocco | | Accession: September 8, 2006 | October 8, 2006 | Details |
| Netherlands | December 2, 1961 | Ratification: August 8, 1967 | August 10, 1968 | Details |
| New Zealand | | Accession: November 3, 1980 | November 8, 1981 | Details |
| Nicaragua | | Accession: August 6, 2001 | September 6, 2001 | Details |
| Norway | | Accession: August 13, 1993 | September 13, 1993 | Details |
| Oman | | Accession: October 22, 2009 | November 22, 2009 | Details |
| Panama | | Accession: April 23, 1999 | May 23, 1999 | Details |
| Paraguay | | Accession: January 8, 1997 | February 8, 1997 | Details |
| Peru | | Accession: July 8, 2011 | August 8, 2011 | Details |
| Poland | | Accession: October 11, 1989 | November 11, 1989 | Details |
| Portugal | | Accession: September 14, 1995 | October 14, 1995 | Details |
| Republic of Korea | | Accession: December 7, 2001 | January 7, 2002 | Details |
| Republic of Moldova | | Accession: September 28, 1998 | October 28, 1998 | Details |
| Romania | | Accession: February 16, 2001 | March 16, 2001 | Details |
| Russian Federation | | Accession: March 24, 1998 | April 24, 1998 | Details |
| Serbia | | Accession: December 5, 2012 | January 5, 2013 | Details |
| Singapore | | Accession: June 30, 2004 | July 30, 2004 | Details |
| Slovakia | | Declaration of Continued Application: January 12, 1993 | January 1, 1993 | Details |
| Slovenia | | Accession: June 29, 1999 | July 29, 1999 | Details |
| South Africa | | Accession: October 7, 1977 | November 6, 1977 | Details |
| Spain | | Accession: April 18, 1980 | May 18, 1980 | Details |
| Sweden | | Accession: November 17, 1971 | December 17, 1971 | Details |
| Switzerland | November 30, 1962 | Ratification: June 10, 1977 | July 10, 1977 | Details |
| the former Yugoslav Republic of Macedonia | | Accession: April 4, 2011 | May 4, 2011 | Details |
| Trinidad and Tobago | | Accession: December 30, 1997 | January 30, 1998 | Details |
| Tunisia | | Accession: July 31, 2003 | August 31, 2003 | Details |
| Turkey | | Accession: October 18, 2007 | November 18, 2007 | Details |
| Ukraine | | Accession: October 3, 1995 | November 3, 1995 | Details |
| United Kingdom | November 26, 1962 | Ratification: September 17, 1965 | August 10, 1968 | Details |
| United States of America | | Acceptance: November 12, 1980 | November 8, 1981 | Details |
| Uruguay | | Accession: October 13, 1994 | November 13, 1994 | Details |
| Uzbekistan | | Accession: October 14, 2004 | November 14, 2004 | Details |
| Viet Nam | | Accession: November 24, 2006 | December 24, 2006 | Details |
