| Contracting Parties/Signatories | Signature | Instrument | In Force | Details |
| Albania | | Accession: June 19, 2003 | September 19, 2003 | |
| Armenia | | Accession: December 6, 2004 | March 6, 2005 | |
| Australia | | Accession: April 7, 1987 | July 7, 1987 | Details |
| Austria | December 22, 1977 | Ratification: January 26, 1984 | April 26, 1984 | |
| Azerbaijan | | Accession: July 14, 2003 | October 14, 2003 | |
| Bahrain | | Accession: August 20, 2012 | November 20, 2012 | |
| Belarus | | Accession: July 19, 2001 | October 19, 2001 | |
| Belgium | | Accession: September 15, 1983 | December 15, 1983 | Details |
| Bosnia and Herzegovina | | Accession: October 27, 2008 | January 27, 2009 | |
| Brunei Darussalam | | Accession: April 24, 2012 | July 24, 2012 | |
| Bulgaria | April 28, 1977 | Ratification: July 19, 1978 | August 19, 1980 | Details |
| Canada | | Accession: June 21, 1996 | September 21, 1996 | Details |
| Chile | | Accession: May 5, 2011 | August 5, 2011 | Details |
| China | | Accession: April 1, 1995 | July 1, 1995 | Details |
| Costa Rica | | Accession: June 30, 2008 | September 30, 2008 | |
| Croatia | | Accession: November 25, 1999 | February 25, 2000 | |
| Cuba | | Accession: November 19, 1993 | February 19, 1994 | |
| Czech Republic | | Declaration of Continued Application: December 18, 1992 | January 1, 1993 | Details |
| Democratic People's Republic of Korea | | Accession: November 21, 2001 | February 21, 2002 | |
| Denmark | April 28, 1977 | Ratification: April 1, 1985 | July 1, 1985 | |
| Dominican Republic | | Accession: April 3, 2007 | July 3, 2007 | |
| El Salvador | | Accession: May 17, 2006 | August 17, 2006 | |
| Estonia | | Accession: June 14, 1996 | September 14, 1996 | |
| Finland | April 28, 1977 | Ratification: June 1, 1985 | September 1, 1985 | Details |
| France | April 28, 1977 | Ratification: February 21, 1980 | August 19, 1980 | Details |
| Georgia | | Accession: June 30, 2005 | September 30, 2005 | |
| Germany | April 28, 1977 | Ratification: October 20, 1980 | January 20, 1981 | Details |
| Greece | | Accession: July 30, 1993 | October 30, 1993 | |
| Guatemala | | Accession: July 14, 2006 | October 14, 2006 | |
| Honduras | | Accession: March 20, 2006 | June 20, 2006 | |
| Hungary | April 28, 1977 | Ratification: July 11, 1978 | August 19, 1980 | Details |
| Iceland | | Accession: December 23, 1994 | March 23, 1995 | |
| India | | Accession: September 17, 2001 | December 17, 2001 | Details |
| Ireland | | Accession: September 15, 1999 | December 15, 1999 | |
| Israel | | Accession: January 26, 1996 | April 26, 1996 | |
| Italy | April 28, 1977 | Ratification: December 23, 1985 | March 23, 1986 | Details |
| Japan | | Accession: May 19, 1980 | August 19, 1980 | Details |
| Jordan | | Accession: August 14, 2008 | November 14, 2008 | |
| Kazakhstan | | Accession: January 24, 2002 | April 24, 2002 | |
| Kyrgyzstan | | Accession: February 17, 2003 | May 17, 2003 | |
| Latvia | | Accession: September 29, 1994 | December 29, 1994 | Details |
| Liechtenstein | | Accession: May 19, 1981 | August 19, 1981 | |
| Lithuania | | Accession: February 9, 1998 | May 9, 1998 | |
| Luxembourg | December 8, 1977 | Ratification: April 29, 2010 | July 29, 2010 | |
| Mexico | | Accession: December 21, 2000 | March 21, 2001 | |
| Monaco | | Accession: October 23, 1998 | January 23, 1999 | |
| Montenegro | | Declaration of Continued Application: December 4, 2006 | June 3, 2006 | Details |
| Morocco | | Accession: April 20, 2011 | July 20, 2011 | |
| Netherlands | April 28, 1977 | Ratification: April 2, 1987 | July 2, 1987 | Details |
| Nicaragua | | Accession: May 10, 2006 | August 10, 2006 | |
| Norway | April 28, 1977 | Ratification: October 1, 1985 | January 1, 1986 | |
| Oman | | Accession: July 16, 2007 | October 16, 2007 | |
| Panama | | Accession: June 7, 2012 | September 7, 2012 | |
| Peru | | Accession: October 20, 2008 | January 20, 2009 | |
| Philippines | | Accession: July 21, 1981 | October 21, 1981 | |
| Poland | | Accession: June 22, 1993 | September 22, 1993 | Details |
| Portugal | | Accession: July 16, 1997 | October 16, 1997 | |
| Republic of Korea | | Accession: December 28, 1987 | March 28, 1988 | Details |
| Republic of Moldova | | Declaration of Continued Application: February 14, 1994 | December 25, 1991 | Details |
| Romania | | Accession: June 25, 1999 | September 25, 1999 | |
| Russian Federation | December 30, 1977 | Ratification: January 22, 1981 | April 22, 1981 | Details |
| Senegal | December 17, 1977 | | | |
| Serbia | | Declaration of Continued Application: September 19, 2006 | February 25, 1994 | Details |
| Singapore | | Accession: November 23, 1994 | February 23, 1995 | |
| Slovakia | | Declaration of Continued Application: December 30, 1992 | January 1, 1993 | Details |
| Slovenia | | Accession: December 12, 1997 | March 12, 1998 | |
| South Africa | | Accession: April 14, 1997 | July 14, 1997 | |
| Spain | April 28, 1977 | Ratification: December 19, 1980 | March 19, 1981 | Details |
| Sweden | November 14, 1977 | Ratification: June 23, 1983 | October 1, 1983 | |
| Switzerland | April 28, 1977 | Ratification: May 19, 1981 | August 19, 1981 | |
| Tajikistan | | Declaration of Continued Application: February 14, 1994 | December 25, 1991 | Details |
| the former Yugoslav Republic of Macedonia | | Accession: May 30, 2002 | August 30, 2002 | |
| Trinidad and Tobago | | Accession: December 10, 1993 | March 10, 1994 | |
| Tunisia | | Accession: February 23, 2004 | May 23, 2004 | |
| Turkey | | Accession: August 31, 1998 | November 30, 1998 | |
| Ukraine | | Accession: April 2, 1997 | July 2, 1997 | |
| United Kingdom | April 28, 1977 | Ratification: September 29, 1980 | December 29, 1980 | Details |
| United States of America | April 28, 1977 | Acceptance: September 24, 1979 | August 19, 1980 | Details |
| Uzbekistan | | Accession: October 12, 2001 | January 12, 2002 | |