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WIPO-Administered Treaties

Export to Excel Contracting Parties Patent Cooperation Treaty (Total Members: 158)
Member Signature Instrument In Force Details
Albania
Accession: July 4, 1995
October 4, 1995
Algeria
June 19, 1970
Ratification: December 8, 1999
March 8, 2000
 Details
Angola
Accession: September 27, 2007
December 27, 2007
Antigua and Barbuda
Accession: December 17, 1999
March 17, 2000
Argentina
December 21, 1970
Armenia
Declaration of Continued Application: May 17, 1994
December 25, 1991
 Details
Australia
Accession: December 31, 1979
March 31, 1980
Austria
December 22, 1970
Ratification: January 23, 1979
April 23, 1979
Azerbaijan
Accession: September 25, 1995
December 25, 1995
Bahrain
Accession: December 18, 2006
March 18, 2007
 Details
Barbados
Accession: December 12, 1984
March 12, 1985
Belarus
Declaration of Continued Application: April 14, 1993
December 25, 1991
 Details
Belgium
December 30, 1970
Ratification: September 14, 1981
December 14, 1981
Belize
Accession: March 17, 2000
June 17, 2000
Benin
Accession: November 26, 1986
February 26, 1987
Bosnia and Herzegovina
Accession: June 7, 1996
September 7, 1996
Botswana
Accession: July 29, 2003
October 30, 2003
Brazil
June 19, 1970
Ratification: January 9, 1978
April 9, 1978
Brunei Darussalam
Accession: April 24, 2012
July 24, 2012
Bulgaria
Accession: February 21, 1984
May 21, 1984
 Details
Burkina Faso
Accession: December 21, 1988
March 21, 1989
Cabo Verde
Accession: April 6, 2022
July 6, 2022
Cambodia
Accession: September 8, 2016
December 8, 2016
 Details
Cameroon
Accession: March 15, 1973
January 24, 1978
 Details
Canada
June 19, 1970
Ratification: October 2, 1989
January 2, 1990
Central African Republic
Accession: September 15, 1971
January 24, 1978
Chad
Accession: February 12, 1974
January 24, 1978
Chile
Accession: March 2, 2009
June 2, 2009
 Details
China
Accession: October 1, 1993
January 1, 1994
 Details
Colombia
Accession: November 29, 2000
February 28, 2001
Comoros
Accession: January 3, 2005
April 3, 2005
Congo
Accession: August 8, 1977
January 24, 1978
 Details
Costa Rica
Accession: May 3, 1999
August 3, 1999
Côte d'Ivoire
December 3, 1970
Ratification: January 31, 1991
April 30, 1991
Croatia
Ratification: April 1, 1998
July 1, 1998
 Details
Cuba
Accession: April 16, 1996
July 16, 1996
 Details
Cyprus
Accession: January 1, 1998
April 1, 1998
Czech Republic
Declaration of Continued Application: December 18, 1992
January 1, 1993
 Details
Democratic People's Republic of Korea
Accession: April 8, 1980
July 8, 1980
Denmark
June 19, 1970
Ratification: September 1, 1978
December 1, 1978
 Details
Djibouti
Accession: June 23, 2016
September 23, 2016
Dominica
Accession: May 7, 1999
August 7, 1999
Dominican Republic
Accession: February 28, 2007
May 28, 2007
Ecuador
Accession: February 7, 2001
May 7, 2001
Egypt
June 19, 1970
Ratification: June 6, 2003
September 6, 2003
 Details
El Salvador
Accession: May 17, 2006
August 17, 2006
Equatorial Guinea
Accession: April 17, 2001
July 17, 2001
Estonia
Accession: May 24, 1994
August 24, 1994
Eswatini
Accession: June 20, 1994
September 20, 1994
 Details
Finland
June 19, 1970
Ratification: July 1, 1980
October 1, 1980
 Details
France
December 31, 1970
Ratification: November 25, 1977
February 25, 1978
 Details
Gabon
Accession: March 6, 1975
January 24, 1978
Gambia (the)
Accession: September 9, 1997
December 9, 1997
Georgia
Declaration of Continued Application: January 18, 1994
December 25, 1991
 Details
Germany
June 19, 1970
Ratification: July 19, 1976
January 24, 1978
 Details
Ghana
Accession: November 26, 1996
February 26, 1997
Greece
Accession: July 9, 1990
October 9, 1990
 Details
Grenada
Accession: June 22, 1998
September 22, 1998
Guatemala
Accession: July 14, 2006
October 14, 2006
Guinea
Accession: February 27, 1991
May 27, 1991
Guinea-Bissau
Accession: September 12, 1997
December 12, 1997
Holy See
June 19, 1970
Honduras
Accession: March 20, 2006
June 20, 2006
Hungary
June 19, 1970
Ratification: March 27, 1980
June 27, 1980
 Details
Iceland
Accession: December 23, 1994
March 23, 1995
India
Accession: September 7, 1998
December 7, 1998
 Details
Indonesia
Accession: June 5, 1997
September 5, 1997
 Details
Iran (Islamic Republic of)
July 7, 1970
Ratification: July 4, 2013
October 4, 2013
 Details
Iraq
Accession: January 31, 2022
April 30, 2022
Ireland
June 19, 1970
Ratification: May 1, 1992
August 1, 1992
Israel
June 19, 1970
Ratification: March 1, 1996
June 1, 1996
Italy
June 19, 1970
Ratification: December 28, 1984
March 28, 1985
Jamaica
Accession: November 10, 2021
February 10, 2022
Japan
June 19, 1970
Ratification: July 1, 1978
October 1, 1978
 Details
Jordan
Accession: March 9, 2017
June 9, 2017
Kazakhstan
Declaration of Continued Application: February 16, 1993
December 25, 1991
 Details
Kenya
Accession: March 8, 1994
June 8, 1994
Kuwait
Accession: June 9, 2016
September 9, 2016
Kyrgyzstan
Declaration of Continued Application: February 14, 1994
December 25, 1991
 Details
Lao People's Democratic Republic
Accession: March 14, 2006
June 14, 2006
 Details
Latvia
Accession: June 7, 1993
September 7, 1993
Lesotho
Accession: July 21, 1995
October 21, 1995
Liberia
Accession: May 27, 1994
August 27, 1994
Libya
Accession: June 15, 2005
September 15, 2005
 Details
Liechtenstein
Accession: December 19, 1979
March 19, 1980
 Details
Lithuania
Accession: April 5, 1994
July 5, 1994
Luxembourg
December 30, 1970
Ratification: January 31, 1978
April 30, 1978
 Details
Madagascar
December 10, 1970
Ratification: March 27, 1972
January 24, 1978
Malawi
Accession: May 16, 1972
January 24, 1978
Malaysia
Accession: May 16, 2006
August 16, 2006
 Details
Mali
Accession: July 19, 1984
October 19, 1984
Malta
Accession: December 1, 2006
March 1, 2007
 Details
Mauritania
Accession: January 13, 1983
April 13, 1983
Mauritius
Accession: December 15, 2022
March 15, 2023
Mexico
Accession: October 1, 1994
January 1, 1995
Monaco
December 31, 1970
Ratification: March 22, 1979
June 22, 1979
Mongolia
Accession: February 27, 1991
May 27, 1991
 Details
Montenegro
Declaration of Continued Application: December 4, 2006
June 3, 2006
 Details
Morocco
Accession: July 8, 1999
October 8, 1999
Mozambique
Accession: February 18, 2000
May 18, 2000
 Details
Namibia
Accession: October 1, 2003
January 1, 2004
Netherlands (Kingdom of the)
December 31, 1970
Ratification: April 10, 1979
July 10, 1979
 Details
New Zealand
Accession: September 1, 1992
December 1, 1992
Nicaragua
Accession: December 6, 2002
March 6, 2003
Niger
Accession: December 21, 1992
March 21, 1993
Nigeria
Accession: February 8, 2005
May 8, 2005
North Macedonia
Accession: May 10, 1995
August 10, 1995
Norway
June 19, 1970
Ratification: October 1, 1979
January 1, 1980
 Details
Oman
Accession: July 26, 2001
October 26, 2001
 Details
Panama
Accession: June 7, 2012
September 7, 2012
Papua New Guinea
Accession: March 14, 2003
June 14, 2003
Peru
Accession: March 6, 2009
June 6, 2009
Philippines
June 19, 1970
Ratification: May 17, 2001
August 17, 2001
Poland
Accession: September 25, 1990
December 25, 1990
 Details
Portugal
Accession: August 24, 1992
November 24, 1992
Qatar
Accession: May 3, 2011
August 3, 2011
 Details
Republic of Korea
Accession: May 10, 1984
August 10, 1984
 Details
Republic of Moldova
Declaration of Continued Application: February 14, 1994
December 25, 1991
 Details
Romania
December 28, 1970
Ratification: April 23, 1979
July 23, 1979
 Details
Russian Federation
December 23, 1970
Ratification: December 29, 1977
March 29, 1978
 Details
Rwanda
Accession: May 31, 2011
August 31, 2011
Saint Kitts and Nevis
Accession: July 27, 2005
October 27, 2005
Saint Lucia
Accession: May 30, 1996
August 30, 1996
 Details
Saint Vincent and the Grenadines
Accession: May 6, 2002
August 6, 2002
 Details
Samoa
Accession: October 2, 2019
January 2, 2020
 Details
San Marino
Accession: September 14, 2004
December 14, 2004
Sao Tome and Principe
Accession: April 3, 2008
July 3, 2008
Saudi Arabia
Accession: May 3, 2013
August 3, 2013
Senegal
December 29, 1970
Ratification: March 8, 1972
January 24, 1978
Serbia
June 19, 1970
Ratification: November 1, 1996
February 1, 1997
 Details
Seychelles
Accession: August 7, 2002
November 7, 2002
Sierra Leone
Accession: March 17, 1997
June 17, 1997
Singapore
Accession: November 23, 1994
February 23, 1995
Slovakia
Declaration of Continued Application: December 30, 1992
January 1, 1993
 Details
Slovenia
Accession: December 1, 1993
March 1, 1994
South Africa
Accession: December 16, 1998
March 16, 1999
 Details
Spain
Accession: August 16, 1989
November 16, 1989
 Details
Sri Lanka
Accession: November 26, 1981
February 26, 1982
Sudan
Accession: January 16, 1984
April 16, 1984
Sweden
June 19, 1970
Ratification: February 17, 1978
May 17, 1978
 Details
Switzerland
June 19, 1970
Ratification: September 14, 1977
January 24, 1978
 Details
Syrian Arab Republic
December 29, 1970
Ratification: March 26, 2003
June 26, 2003
Tajikistan
Declaration of Continued Application: February 14, 1994
December 25, 1991
 Details
Thailand
Accession: September 24, 2009
December 24, 2009
 Details
Togo
December 23, 1970
Ratification: January 28, 1975
January 24, 1978
Trinidad and Tobago
Accession: December 10, 1993
March 10, 1994
Tunisia
Accession: September 10, 2001
December 10, 2001
 Details
Türkiye
Accession: October 1, 1995
January 1, 1996
Turkmenistan
Declaration of Continued Application: March 1, 1995
December 25, 1991
 Details
Uganda
Accession: November 9, 1994
February 9, 1995
Ukraine
Declaration of Continued Application: September 21, 1992
December 25, 1991
 Details
United Arab Emirates
Accession: December 10, 1998
March 10, 1999
United Kingdom
June 19, 1970
Ratification: October 24, 1977
January 24, 1978
 Details
United Republic of Tanzania
Accession: June 14, 1999
September 14, 1999
United States of America
June 19, 1970
Ratification: November 26, 1975
January 24, 1978
 Details
Uruguay
Accession: October 7, 2024
January 7, 2025
 Details
Uzbekistan
Declaration of Continued Application: August 18, 1993
December 25, 1991
 Details
Viet Nam
Accession: December 10, 1992
March 10, 1993
Zambia
Accession: August 15, 2001
November 15, 2001
Zimbabwe
Accession: March 11, 1997
June 11, 1997