| Member | Signature | Instrument | In Force | Details |
|---|---|---|---|---|
Afghanistan |
Accession: March 2, 2018
|
June 2, 2018
|
Details | |
Albania |
Accession: December 2, 1993
|
March 6, 1994
|
Details | |
Algeria |
Accession: January 19, 1998
|
April 19, 1998
|
Details | |
Andorra |
Accession: March 2, 2004
|
June 2, 2004
|
Details | |
Antigua and Barbuda |
Accession: December 17, 1999
|
March 17, 2000
|
Details | |
Argentina |
Accession: May 5, 1967
|
June 10, 1967
|
Details | |
Armenia |
Accession: July 19, 2000
|
October 19, 2000
|
Details | |
Australia |
Declaration of Continued Application: April 14, 1928
|
April 14, 1928
|
Details | |
Austria |
Accession: September 11, 1920
|
October 1, 1920
|
Details | |
Azerbaijan |
Accession: March 4, 1999
|
June 4, 1999
|
Details | |
Bahamas |
Declaration of Continued Application: July 5, 1976
|
July 10, 1973
|
Details | |
Bahrain |
Accession: November 29, 1996
|
March 2, 1997
|
Details | |
Bangladesh |
Accession: February 4, 1999
|
May 4, 1999
|
Details | |
Barbados |
Accession: March 16, 1983
|
July 30, 1983
|
Details | |
Belarus |
Accession: September 12, 1997
|
December 12, 1997
|
Details | |
Belgium |
September 9, 1886
|
Ratification: September 5, 1887
|
December 5, 1887
|
Details |
Belize |
Accession: March 17, 2000
|
June 17, 2000
|
Details | |
Benin |
Declaration of Continued Application: January 3, 1961
|
August 1, 1960
|
Details | |
Bhutan |
Accession: August 25, 2004
|
November 25, 2004
|
Details | |
Bolivia (Plurinational State of) |
Accession: August 4, 1993
|
November 4, 1993
|
Details | |
Bosnia and Herzegovina |
Declaration of Continued Application: June 2, 1993
|
March 1, 1992
|
Details | |
Botswana |
Accession: January 15, 1998
|
April 15, 1998
|
Details | |
Brazil |
Accession: February 6, 1922
|
February 9, 1922
|
Details | |
Brunei Darussalam |
Accession: May 30, 2006
|
August 30, 2006
|
Details | |
Bulgaria |
Accession: December 5, 1921
|
December 5, 1921
|
Details | |
Burkina Faso |
Accession: April 26, 1963
|
August 19, 1963
|
Details | |
Burundi |
Accession: January 12, 2016
|
April 12, 2016
|
Details | |
Cabo Verde |
Accession: April 7, 1997
|
July 7, 1997
|
Details | |
Cambodia |
Accession: December 9, 2021
|
March 9, 2022
|
Details | |
Cameroon |
Declaration of Continued Application: September 21, 1964
|
January 1, 1960
|
Details | |
Canada |
Declaration of Continued Application: April 10, 1928
|
April 10, 1928
|
Details | |
Central African Republic |
Accession: May 31, 1977
|
September 3, 1977
|
Details | |
Chad |
Accession: August 4, 1971
|
November 25, 1971
|
Details | |
Chile |
Accession: April 9, 1970
|
June 5, 1970
|
Details | |
China |
Accession: July 10, 1992
|
October 15, 1992
|
Details | |
Colombia |
Accession: December 4, 1987
|
March 7, 1988
|
Details | |
Comoros |
Accession: January 17, 2005
|
April 17, 2005
|
Details | |
Congo |
Declaration of Continued Application: May 8, 1962
|
August 15, 1960
|
Details | |
Cook Islands |
Accession: May 3, 2017
|
August 3, 2017
|
Details | |
Costa Rica |
Accession: March 3, 1978
|
June 10, 1978
|
Details | |
Côte d'Ivoire |
Accession: July 8, 1961
|
January 1, 1962
|
Details | |
Croatia |
Declaration/Notification of Succession: July 28, 1992
|
October 8, 1991
|
Details | |
Cuba |
Accession: November 20, 1996
|
February 20, 1997
|
Details | |
Cyprus |
Declaration of Continued Application: February 24, 1964
|
August 16, 1960
|
Details | |
Czech Republic |
Declaration of Continued Application: December 18, 1992
|
January 1, 1993
|
Details | |
Democratic People's Republic of Korea |
Accession: January 28, 2003
|
April 28, 2003
|
Details | |
Democratic Republic of the Congo |
Declaration of Continued Application: October 8, 1963
|
June 30, 1960
|
Details | |
Denmark |
Accession: June 13, 1903
|
July 1, 1903
|
Details | |
Djibouti |
Accession: February 13, 2002
|
May 13, 2002
|
Details | |
Dominica |
Accession: May 7, 1999
|
August 7, 1999
|
Details | |
Dominican Republic |
Accession: September 24, 1997
|
December 24, 1997
|
Details | |
Ecuador |
Accession: July 8, 1991
|
October 9, 1991
|
Details | |
Egypt |
Accession: March 2, 1977
|
June 7, 1977
|
Details | |
El Salvador |
Accession: November 18, 1993
|
February 19, 1994
|
Details | |
Equatorial Guinea |
Accession: March 26, 1997
|
June 26, 1997
|
Details | |
Estonia |
Accession: July 26, 1994
|
October 26, 1994
|
Details | |
Eswatini |
Accession: September 14, 1998
|
December 14, 1998
|
Details | |
Fiji |
Declaration of Continued Application: December 1, 1971
|
October 10, 1970
|
Details | |
Finland |
Accession: March 23, 1928
|
April 1, 1928
|
Details | |
France |
September 9, 1886
|
Ratification: September 5, 1887
|
December 5, 1887
|
Details |
Gabon |
Accession: December 19, 1961
|
March 26, 1962
|
Details | |
Gambia (the) |
Accession: December 7, 1992
|
March 7, 1993
|
Details | |
Georgia |
Accession: February 16, 1995
|
May 16, 1995
|
Details | |
Germany |
September 9, 1886
|
Ratification: September 5, 1887
|
December 5, 1887
|
Details |
Ghana |
Accession: July 11, 1991
|
October 11, 1991
|
Details | |
Greece |
Accession: November 9, 1920
|
November 9, 1920
|
Details | |
Grenada |
Accession: June 22, 1998
|
September 22, 1998
|
Details | |
Guatemala |
Accession: April 28, 1997
|
July 28, 1997
|
Details | |
Guinea |
Accession: August 13, 1980
|
November 20, 1980
|
Details | |
Guinea-Bissau |
Accession: April 18, 1991
|
July 22, 1991
|
Details | |
Guyana |
Accession: July 25, 1994
|
October 25, 1994
|
Details | |
Haiti |
Accession: October 11, 1995
|
January 11, 1996
|
Details | |
Holy See |
Accession: July 19, 1935
|
September 12, 1935
|
Details | |
Honduras |
Accession: October 24, 1989
|
January 25, 1990
|
Details | |
Hungary |
Accession: February 14, 1922
|
February 14, 1922
|
Details | |
Iceland |
Accession: June 30, 1947
|
September 7, 1947
|
Details | |
India |
Declaration of Continued Application: April 23, 1928
|
April 1, 1928
|
Details | |
Indonesia |
Accession: June 5, 1997
|
September 5, 1997
|
Details | |
Ireland |
Accession: October 5, 1927
|
October 5, 1927
|
Details | |
Israel |
Accession: December 14, 1949
|
March 24, 1950
|
Details | |
Italy |
September 9, 1886
|
Ratification: September 5, 1887
|
December 5, 1887
|
Details |
Jamaica |
Accession: September 28, 1993
|
January 1, 1994
|
Details | |
Japan |
Accession: April 18, 1899
|
July 15, 1899
|
Details | |
Jordan |
Accession: April 28, 1999
|
July 28, 1999
|
Details | |
Kazakhstan |
Accession: January 12, 1999
|
April 12, 1999
|
Details | |
Kenya |
Accession: March 11, 1993
|
June 11, 1993
|
Details | |
Kiribati |
Accession: October 2, 2017
|
January 2, 2018
|
Details | |
Kuwait |
Accession: September 2, 2014
|
December 2, 2014
|
Details | |
Kyrgyzstan |
Accession: April 8, 1999
|
July 8, 1999
|
Details | |
Lao People's Democratic Republic |
Accession: December 14, 2011
|
March 14, 2012
|
Details | |
Latvia |
Accession: May 11, 1995
|
August 11, 1995
|
Details | |
Lebanon |
Accession: February 19, 1946
|
September 30, 1947
|
Details | |
Lesotho |
Accession: June 27, 1989
|
September 28, 1989
|
Details | |
Liberia |
Accession: December 8, 1988
|
March 8, 1989
|
Details | |
Libya |
Accession: June 28, 1976
|
September 28, 1976
|
Details | |
Liechtenstein |
Accession: July 20, 1931
|
July 30, 1931
|
Details | |
Lithuania |
Accession: September 14, 1994
|
December 14, 1994
|
Details | |
Luxembourg |
Accession: June 20, 1888
|
June 20, 1888
|
Details | |
Madagascar |
Declaration of Continued Application: February 11, 1966
|
January 1, 1966
|
Details | |
Malawi |
Accession: July 12, 1991
|
October 12, 1991
|
Details | |
Malaysia |
Accession: June 28, 1990
|
October 1, 1990
|
Details | |
Mali |
Declaration of Continued Application: March 19, 1962
|
March 19, 1962
|
Details | |
Malta |
Declaration of Continued Application: May 29, 1968
|
September 21, 1964
|
Details | |
Mauritania |
Accession: October 16, 1972
|
February 6, 1973
|
Details | |
Mauritius |
Accession: February 9, 1989
|
May 10, 1989
|
Details | |
Mexico |
Accession: May 9, 1967
|
June 11, 1967
|
Details | |
Micronesia (Federated States of) |
Accession: July 7, 2003
|
October 7, 2003
|
Details | |
Monaco |
Accession: May 30, 1889
|
May 30, 1889
|
Details | |
Mongolia |
Accession: December 12, 1997
|
March 12, 1998
|
Details | |
Montenegro |
Declaration of Continued Application: December 4, 2006
|
June 3, 2006
|
Details | |
Morocco |
Accession: June 16, 1917
|
June 16, 1917
|
Details | |
Mozambique |
Accession: August 22, 2013
|
November 22, 2013
|
Details | |
Namibia |
Declaration of Continued Application: September 21, 1993
|
March 21, 1990
|
Details | |
Nauru |
Accession: February 11, 2020
|
May 11, 2020
|
Details | |
Nepal |
Accession: October 11, 2005
|
January 11, 2006
|
Details | |
Netherlands (Kingdom of the) |
Accession: October 9, 1912
|
November 1, 1912
|
Details | |
New Zealand |
Declaration of Continued Application: April 26, 1928
|
April 24, 1928
|
Details | |
Nicaragua |
Accession: May 23, 2000
|
August 23, 2000
|
Details | |
Niger |
Declaration of Continued Application: May 2, 1962
|
August 3, 1960
|
Details | |
Nigeria |
Accession: June 10, 1993
|
September 14, 1993
|
Details | |
Niue |
Accession: June 24, 2016
|
September 24, 2016
|
Details | |
North Macedonia |
Declaration/Notification of Succession: July 23, 1993
|
September 8, 1991
|
Details | |
Norway |
Accession: April 13, 1896
|
April 13, 1896
|
Details | |
Oman |
Accession: April 14, 1999
|
July 14, 1999
|
Details | |
Pakistan |
Accession: June 4, 1948
|
July 5, 1948
|
Details | |
Panama |
Accession: March 8, 1996
|
June 8, 1996
|
Details | |
Paraguay |
Accession: September 9, 1991
|
January 2, 1992
|
Details | |
Peru |
Accession: May 20, 1988
|
August 20, 1988
|
Details | |
Philippines |
Accession: June 29, 1950
|
August 1, 1951
|
Details | |
Poland |
Accession: January 28, 1920
|
January 28, 1920
|
Details | |
Portugal |
Accession: March 29, 1911
|
March 29, 1911
|
Details | |
Qatar |
Accession: April 5, 2000
|
July 5, 2000
|
Details | |
Republic of Korea |
Accession: May 21, 1996
|
August 21, 1996
|
Details | |
Republic of Moldova |
Accession: August 1, 1995
|
November 2, 1995
|
Details | |
Romania |
Accession: August 28, 1926
|
January 1, 1927
|
Details | |
Russian Federation |
Accession: December 9, 1994
|
March 13, 1995
|
Details | |
Rwanda |
Accession: November 3, 1983
|
March 1, 1984
|
Details | |
Saint Kitts and Nevis |
Accession: January 3, 1995
|
April 9, 1995
|
Details | |
Saint Lucia |
Accession: May 21, 1993
|
August 24, 1993
|
Details | |
Saint Vincent and the Grenadines |
Accession: May 29, 1995
|
August 29, 1995
|
Details | |
Samoa |
Accession: April 21, 2006
|
July 21, 2006
|
Details | |
San Marino |
Accession: June 2, 2020
|
September 2, 2020
|
Details | |
Sao Tome and Principe |
Accession: March 14, 2016
|
June 14, 2016
|
Details | |
Saudi Arabia |
Accession: December 11, 2003
|
March 11, 2004
|
Details | |
Senegal |
Accession: June 30, 1962
|
August 25, 1962
|
Details | |
Serbia |
Declaration of Continued Application: September 19, 2006
|
April 27, 1992
|
Details | |
Singapore |
Accession: September 21, 1998
|
December 21, 1998
|
Details | |
Slovakia |
Declaration of Continued Application: December 30, 1992
|
January 1, 1993
|
Details | |
Slovenia |
Declaration of Continued Application: June 12, 1992
|
June 25, 1991
|
Details | |
Solomon Islands |
Accession: April 4, 2019
|
July 4, 2019
|
Details | |
South Africa |
Declaration of Continued Application: October 3, 1928
|
October 3, 1928
|
Details | |
Spain |
September 9, 1886
|
Ratification: September 5, 1887
|
December 5, 1887
|
Details |
Sri Lanka |
Declaration of Continued Application: July 20, 1959
|
February 4, 1948
|
Details | |
Sudan |
Accession: September 28, 2000
|
December 28, 2000
|
Details | |
Suriname |
Accession: November 16, 1976
|
February 23, 1977
|
Details | |
Sweden |
Accession: July 8, 1904
|
August 1, 1904
|
Details | |
Switzerland |
September 9, 1886
|
Ratification: September 5, 1887
|
December 5, 1887
|
Details |
Syrian Arab Republic |
Accession: March 11, 2004
|
June 11, 2004
|
Details | |
Tajikistan |
Accession: December 9, 1999
|
March 9, 2000
|
Details | |
Thailand |
Accession: June 17, 1931
|
July 17, 1931
|
Details | |
Togo |
Accession: January 28, 1975
|
April 30, 1975
|
Details | |
Tonga |
Accession: March 14, 2001
|
June 14, 2001
|
Details | |
Trinidad and Tobago |
Accession: May 16, 1988
|
August 16, 1988
|
Details | |
Tunisia |
September 9, 1886
|
Ratification: September 5, 1887
|
December 5, 1887
|
Details |
Türkiye |
Accession: October 27, 1951
|
January 1, 1952
|
Details | |
Turkmenistan |
Accession: February 29, 2016
|
May 29, 2016
|
Details | |
Tuvalu |
Accession: March 2, 2017
|
June 2, 2017
|
Details | |
Uganda |
Accession: January 28, 2022
|
April 28, 2022
|
Details | |
Ukraine |
Accession: July 25, 1995
|
October 25, 1995
|
Details | |
United Arab Emirates |
Accession: April 14, 2004
|
July 14, 2004
|
Details | |
United Kingdom |
September 9, 1886
|
Ratification: September 5, 1887
|
December 5, 1887
|
Details |
United Republic of Tanzania |
Accession: April 25, 1994
|
July 25, 1994
|
Details | |
United States of America |
Accession: November 16, 1988
|
March 1, 1989
|
Details | |
Uruguay |
Accession: June 7, 1967
|
July 10, 1967
|
Details | |
Uzbekistan |
Accession: January 19, 2005
|
April 19, 2005
|
Details | |
Vanuatu |
Accession: September 27, 2012
|
December 27, 2012
|
Details | |
Venezuela (Bolivarian Republic of) |
Accession: September 20, 1982
|
December 30, 1982
|
Details | |
Viet Nam |
Accession: July 26, 2004
|
October 26, 2004
|
Details | |
Yemen |
Accession: April 14, 2008
|
July 14, 2008
|
Details | |
Zambia |
Accession: September 13, 1991
|
January 2, 1992
|
Details | |
Zimbabwe |
Declaration/Notification of Succession: September 18, 1981
|
April 18, 1980
|
Details |