| Albania | | Accession: October 16, 2018 | January 16, 2019 | |
| Armenia | | Accession: December 6, 2004 | March 6, 2005 | |
| Austria | December 27, 1973 | Ratification: July 27, 1999 | October 27, 1999 | |
| Belgium | December 10, 1973 | | | |
| Bosnia and Herzegovina | | Accession: January 19, 2012 | April 19, 2012 | |
| Brazil | December 11, 1973 | | | |
| Bulgaria | | Accession: November 27, 2000 | February 27, 2001 | |
| Croatia | | Accession: February 9, 2006 | May 9, 2006 | |
| Cuba | | Accession: April 18, 1997 | July 18, 1997 | Details |
| Denmark | June 12, 1973 | | | |
| France | June 12, 1973 | Ratification: June 11, 1975 | August 9, 1985 | Details |
| Germany | June 12, 1973 | | | Details |
| Guinea | | Accession: August 5, 1996 | November 5, 1996 | |
| Hungary | June 12, 1973 | | | Details |
| Italy | June 12, 1973 | | | |
| Jamaica | | Accession: November 7, 2005 | February 7, 2006 | Details |
| Jordan | | Accession: August 14, 2008 | November 14, 2008 | |
| Kyrgyzstan | | Accession: September 10, 1998 | December 10, 1998 | |
| Luxembourg | June 12, 1973 | Ratification: September 16, 1983 | August 9, 1985 | |
| Malaysia | | Accession: June 28, 2007 | September 28, 2007 | Details |
| Mexico | | Accession: October 26, 2000 | January 26, 2001 | |
| Monaco | December 10, 1973 | | | |
| Montenegro | | Accession: December 9, 2011 | March 9, 2012 | |
| Netherlands | June 12, 1973 | Ratification: December 23, 1976 | August 9, 1985 | Details |
| North Macedonia | | Accession: February 26, 2010 | May 26, 2010 | |
| Norway | June 12, 1973 | | | |
| Poland | | Accession: December 4, 1996 | March 4, 1997 | Details |
| Portugal | June 12, 1973 | | | |
| Republic of Korea | | Accession: January 17, 2011 | April 17, 2011 | |
| Republic of Moldova | | Accession: September 1, 1997 | December 1, 1997 | |
| Romania | December 31, 1973 | Ratification: March 31, 1998 | June 30, 1998 | |
| Saint Lucia | | Accession: September 25, 2001 | December 25, 2001 | |
| San Marino | June 12, 1973 | | | |
| Serbia | June 12, 1973 | Ratification: July 15, 2009 | October 15, 2009 | Details |
| Slovenia | | Accession: May 10, 2001 | August 10, 2001 | Details |
| Sweden | December 19, 1973 | Ratification: June 5, 1980 | August 9, 1985 | |
| Switzerland | June 12, 1973 | | | |
| Trinidad and Tobago | | Accession: December 20, 1995 | March 20, 1996 | |
| Tunisia | | Accession: May 9, 1985 | August 9, 1985 | |
| Turkey | | Accession: October 1, 1995 | January 1, 1996 | |
| Turkmenistan | | Accession: March 7, 2006 | June 7, 2006 | Details |
| Ukraine | | Accession: April 29, 2009 | July 29, 2009 | |
| United Kingdom | | Accession: June 11, 2013 | September 11, 2013 | Details |
| Uruguay | | Accession: October 19, 1999 | January 19, 2000 | |
