This is a list of parties to international patent treaties which are open to all states.
The list below was taken from details supplied by WIPO and the WTO. Dates quoted are the date on which the treaty came into effect for a given country.
Country | Paris | PCT | Budapest | TRIPS | PLT | |
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Afghanistan | 2017-05-14 [6] | — | — | — | — |
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Albania | 1995-10-04 | 1995-10-04 | 2003-09-19 | 2000-09-08 | 2010-05-17 |
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Algeria | 1966-03-01 | 2000-03-08 | — | — | — |
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Andorra | 2004-06-02 | — | — | — | — |
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Angola | 2007-12-27 | 2007-12-27 | — | 1996-11-23 | — |
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Antigua and Barbuda | 2000-03-17 | 2000-03-17 | 2019-06-25 | 1995-01-01 | — |
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Argentina | 1967-02-10 | — | — | 1995-01-01 | — |
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Armenia | 1991-12-25 [a] | 1991-12-25 | 2005-03-06 | 2003-02-05 | 2013-09-17 |
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Australia | 1925-10-10 | 1980-03-31 | 1987-07-07 | 1995-01-01 | 2009-03-16 |
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Austria | 1909-01-01 [b] | 1979-04-23 | 1984-04-26 | 1995-01-01 | — |
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Azerbaijan | 1995-12-25 | 1995-12-25 | 2003-10-14 | — | — |
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Bahamas | 1973-07-10 | — | — | — | — |
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Bahrain | 1997-10-29 | 2007-03-18 | 2012-11-20 | 1995-01-01 | 2005-12-15 |
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Bangladesh | 1991-03-03 | — | — | 1995-01-01 | — |
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Barbados | 1985-03-12 | 1985-03-12 | — | 1995-01-01 | — |
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Belarus | 1991-12-25 [a] | 1991-12-25 | 2001-10-19 | — | 2016-10-21 |
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Belgium | 1884-07-07 | 1981-12-14 | 1983-12-15 | 1995-01-01 | — |
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Belize | 2000-06-17 | 2000-06-17 | — | 1995-01-01 | — |
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Benin | 1967-01-10 | 1987-02-26 | — | 1996-02-22 | — |
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Bhutan | 2000-08-04 | — | — | — | — |
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Bolivia | 1993-11-04 | — | — | 1995-09-12 | — |
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Bosnia and Herzegovina | 1992-03-01 | 1996-09-07 | 2009-01-27 | — | 2012-05-09 |
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Botswana | 1998-04-15 | 2003-10-30 | — | 1995-05-31 | — |
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Brazil | 1884-07-07 | 1978-04-09 | — | 1995-01-01 | — |
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Brunei | 2012-02-17 | 2012-07-24 | 2012-07-24 | 1995-01-01 | — |
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Bulgaria | 1921-06-13 | 1984-05-21 | 1980-08-19 | 1996-12-01 | — |
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Burkina Faso | 1963-11-19 | 1989-03-21 | — | 1995-06-03 | — |
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Burundi | 1977-09-03 | — | — | 1995-07-23 | — |
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Cambodia | 1998-09-22 | 2016-12-08 | — | 2004-10-13 | — |
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Cameroon | 1964-05-10 | 1978-01-24 | — | 1995-12-13 | — |
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Canada | 1923-09-01 | 1990-01-02 | 1996-09-21 | 1995-01-01 | — |
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Cape Verde | 2022-07-06 | 2022-07-06 | — | 2008-07-23 | — |
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Central African Republic | 1963-11-19 | 1978-01-24 | — | 1995-05-31 | — |
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Chad | 1963-11-19 | 1978-01-24 | — | 1996-10-19 | — |
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Chile | 1991-06-14 | 2009-06-02 | 2011-08-05 | 1995-01-01 | — |
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China | 1985-03-19 | 1994-01-01 | 1995-07-01 | 2001-12-11 | — |
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Colombia | 1996-09-03 | 2001-02-28 | 2016-07-26 | 1995-04-30 | — |
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Comoros | 2005-04-03 | 2005-04-03 | — | — | — |
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Congo, Democratic Republic | 1975-01-31 | — | — | 1997-01-01 | — |
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Congo, Republic | 1963-09-02 | 1978-01-24 | — | 1997-03-27 | — |
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Costa Rica | 1995-10-31 | 1999-08-03 | 2008-09-30 | 1995-01-01 | — |
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Côte d'Ivoire | 1963-10-23 | 1991-04-30 | — | 1995-01-01 | — |
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Croatia | 1991-10-08 | 1998-07-01 | 2000-02-25 | 2000-11-30 | 2005-04-28 |
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Cuba | 1904-11-17 | 1996-07-16 | 1994-02-19 | 1995-04-20 | — |
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Cyprus | 1966-01-17 | 1998-04-01 | — | 1995-07-30 | — |
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Czech Republic | 1993-01-01 | 1993-01-01 | 1993-01-01 | 1995-01-01 | — |
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Denmark | 1894-10-01 | 1978-12-01 | 1985-07-01 | 1995-01-01 | 2005-04-28 |
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Djibouti | 2002-05-13 | 2016-09-23 | — | 1995-05-31 | — |
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Dominica | 1999-08-07 | 1999-08-07 | — | 1995-01-01 | — |
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Dominican Republic | 1890-07-11 | 2007-05-28 | 2007-07-03 | 1995-03-09 | — |
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Ecuador | 1999-06-22 | 2001-05-07 | — | 1996-01-21 | — |
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Egypt | 1951-07-01 | 2003-09-06 | — | 1995-06-30 | — |
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El Salvador | 1994-02-19 | 2006-08-17 | 2006-08-17 | 1995-05-07 | — |
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Equatorial Guinea | 1997-06-26 | 2001-07-17 | — | — | — |
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Eritrea | — | — | — | — | — |
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Ethiopia | — | — | — | — | — |
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Estonia | 1994-08-24 [c] | 1994-08-24 | 1996-09-14 | 1999-11-13 | 2005-04-28 |
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Eswatini | 1991-05-12 | 1994-09-20 | — | 1995-01-01 | — |
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European Union | — | — | — | 1995-01-01 | — |
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Fiji | 2024-01-19 | — | — | 1996-01-14 | — |
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Finland | 1921-09-20 | 1980-10-01 | 1985-09-01 | 1995-01-01 | 2006-03-06 |
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France | 1884-07-07 | 1978-02-25 | 1980-08-19 | 1995-01-01 | 2010-01-05 |
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Gabon | 1964-02-29 | 1978-01-24 | — | 1995-01-01 | — |
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Gambia | 1992-01-21 | 1997-12-09 | — | 1996-10-23 | — |
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Georgia | 1991-12-25 [a] | 1991-12-25 | 2005-09-30 | 2000-06-14 | — |
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Germany | 1903-05-01 | 1978-01-24 | 1981-01-20 | 1995-01-01 | — |
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Ghana | 1976-09-28 | 1997-02-26 | — | 1995-01-01 | — |
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Greece | 1924-10-02 | 1990-10-09 | 1993-10-30 | 1995-01-01 | — |
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Grenada | 1998-09-22 | 1998-09-22 | — | 1996-02-22 | — |
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Guatemala | 1998-08-18 | 2006-10-14 | 2006-10-14 | 1995-07-21 | — |
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Guinea | 1982-02-05 | 1991-05-27 | — | 1995-10-25 | — |
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Guinea-Bissau | 1988-06-28 | 1997-12-12 | — | 1995-05-31 | — |
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Guyana | 1994-10-25 | — | — | 1995-01-01 | — |
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Haiti | 1958-07-01 | — | — | 1996-01-30 | — |
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Honduras | 1994-02-04 | 2006-06-20 | 2006-06-20 | 1995-01-01 | — |
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Hong Kong, China | 1997-07-01 [d] | 1997-07-01 [d] | — | 1995-01-01 | — |
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Hungary | 1909-01-01 [b] | 1980-06-27 | 1980-08-19 | 1995-01-01 | 2008-03-12 |
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Iceland | 1962-05-05 | 1995-03-23 | 1995-03-23 | 1995-01-01 | — |
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India | 1998-12-07 | 1998-12-07 | 2001-12-17 | 1995-01-01 | — |
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Indonesia | 1950-12-24 | 1997-09-05 | — | 1995-01-01 | — |
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Iran | 1959-12-16 | 2013-10-04 | — | — | — |
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Iraq | 1976-12-24 | 2022-04-30 | — | — | — |
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Ireland | 1925-12-04 | 1992-08-01 | 1999-12-15 | 1995-01-01 | 2012-05-27 |
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Israel | 1950-03-24 | 1996-06-01 | 1996-04-26 | 1995-04-21 | — |
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Italy | 1884-07-07 | 1985-03-28 | 1986-03-23 | 1995-01-01 | — |
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Jamaica | 1999-12-24 | 2022-02-10 [7] | — | 1995-05-09 | — |
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Japan | 1899-07-15 | 1978-10-01 | 1980-08-19 | 1995-01-01 | — |
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Jordan | 1972-07-17 | 2017-06-09 | 2008-11-14 | 2000-04-11 | — |
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Kazakhstan | 1991-12-25 [a] | 1991-12-25 | 2002-04-24 | — | 2011-10-19 |
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Kenya | 1965-06-14 | 1994-06-08 | — | 1995-01-01 | — |
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Kiribati | 2022-02-05 [8] | — | — | — | — |
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Korea, Democratic People's Republic | 1980-06-10 | 1980-07-08 | 2002-02-21 | — | — |
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Korea, Republic | 1980-05-04 | 1984-08-10 | 1988-03-28 | 1995-01-01 | — |
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Kuwait | 2014-12-02 | 2016-09-09 | — | 1995-01-01 | — |
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Kyrgyzstan | 1991-12-25 [a] | 1991-12-25 | 2003-05-17 | 1998-12-20 | 2005-04-28 |
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Laos | 1998-10-08 | 2006-06-14 | — | 2013-02-02 | — |
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Latvia | 1993-09-07 [e] | 1993-09-07 | 1994-12-29 | 1999-02-10 | 2010-06-12 |
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Lebanon | 1924-09-01 | — | — | — | — |
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Lesotho | 1989-09-28 | 1995-10-21 | — | 1995-05-31 | — |
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Liberia | 1994-08-27 | 1994-08-27 | — | — | 2017-01-04 |
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Libya | 1976-09-28 | 2005-09-15 | — | — | — |
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Liechtenstein | 1933-07-14 | 1980-03-19 | 1981-08-19 | 1995-09-01 | 2009-12-18 |
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Lithuania | 1994-05-22 | 1994-07-05 | 1998-05-09 | 2001-05-31 | 2012-02-03 |
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Luxembourg | 1922-06-30 | 1978-04-30 | 2010-07-29 | 1995-01-01 | — |
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Macau, China | 1999-12-20 [f] | — | — | 1995-01-01 | — |
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Madagascar | 1963-12-21 | 1978-01-24 | — | 1995-11-17 | — |
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Malawi | 1964-07-06 | 1978-01-24 | — | 1995-05-31 | — |
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Malaysia | 1989-01-01 | 2006-08-16 | 2022-06-30 | 1995-01-01 | — |
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Maldives | — | — | — | 1995-05-31 | — |
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Mali | 1983-03-01 | 1984-10-19 | — | 1995-05-31 | — |
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Malta | 1967-10-20 | 2007-03-01 | — | 1995-01-01 | — |
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Mauritania | 1965-04-11 | 1983-04-13 | — | 1995-05-31 | — |
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Mauritius | 1976-09-24 | 2023-03-15 [9] | — | 1995-01-01 | — |
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Mexico | 1903-09-07 | 1995-01-01 | 2001-03-21 | 1995-01-01 | — |
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Federated States of Micronesia | — | — | — | — | — |
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Moldova | 1991-12-25 [a] | 1991-12-25 | 1991-12-25 | 2001-07-26 | 2005-04-28 |
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Monaco | 1956-04-29 | 1979-06-22 | 1999-01-23 | — | — |
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Mongolia | 1985-04-21 | 1991-05-27 | — | 1997-01-29 | — |
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Montenegro | 2006-06-03 | 2006-06-03 | 2006-06-03 | 2012-04-29 | 2012-03-09 |
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Morocco | 1917-07-30 | 1999-10-08 | 2011-07-20 | 1995-01-01 | — |
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Mozambique | 1998-07-09 | 2000-05-18 | — | 1995-08-26 | — |
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Myanmar | — | — | — | 1995-01-01 | — |
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Namibia | 2004-01-01 | 2004-01-01 | — | 1995-01-01 | — |
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Nauru | — | — | — | — | — |
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Nepal | 2001-06-22 | — | — | 2004-04-23 | — |
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Netherlands | 1884-07-07 [g] | 1979-07-10 [g] | 1987-07-02 [g] | 1995-01-01 [g] | 2010-10-27 [h] |
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New Zealand | 1931-07-29 [i] | 1992-12-01 | 2019-03-17 | 1995-01-01 | — |
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Nicaragua | 1996-07-03 | 2003-03-06 | 2006-08-10 | 1995-09-03 | — |
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Niger | 1964-07-05 | 1993-03-21 | — | 1996-12-13 | — |
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Nigeria | 1963-09-02 | 2005-05-08 | — | 1995-01-01 | 2005-04-28 |
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North Macedonia | 1991-09-08 | 1995-08-10 | 2002-08-30 | 2003-04-04 | 2010-04-22 |
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Norway | 1885-07-01 | 1980-01-01 | 1986-01-01 | 1995-01-01 | — |
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Oman | 1999-07-14 | 2001-10-26 | 2007-10-16 | 2000-11-09 | 2007-10-16 |
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Pakistan | 2004-07-22 | — | — | 1995-01-01 | — |
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Palau | — | — | — | — | — |
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Panama | 1996-10-19 | 2012-09-07 | 2012-09-07 | 1997-09-06 | — |
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Papua New Guinea | 1999-06-15 | 2003-06-14 | — | 1996-06-09 | — |
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Paraguay | 1994-05-28 | — | — | 1995-01-01 | — |
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Peru | 1995-04-11 | 2009-06-06 | 2009-01-20 | 1995-01-01 | — |
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Philippines | 1965-09-27 | 2001-08-17 | 1981-10-21 | 1995-01-01 | — |
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Poland | 1919-11-10 | 1990-12-25 | 1993-09-22 | 1995-07-01 | — |
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Portugal | 1884-07-07 | 1992-11-24 | 1997-10-16 | 1995-01-01 | — |
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Qatar | 2000-07-05 | 2011-08-03 | 2014-03-06 | 1996-01-13 | — |
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Romania | 1920-10-06 | 1979-07-23 | 1999-09-25 | 1995-01-01 | 2005-04-28 |
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Russian Federation | 1965-07-01 [a] | 1978-03-29 [a] | 1981-04-22 [a] | 2012-08-22 | 2009-08-12 |
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Rwanda | 1984-03-01 | 2011-08-31 | — | 1996-05-22 | — |
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Saint Kitts and Nevis | 1995-04-09 | 2005-10-27 | — | 1996-02-21 | — |
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Saint Lucia | 1995-06-09 | 1996-10-30 | — | 1995-01-01 | — |
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St. Vincent & Grenadines | 1995-08-29 | 2002-08-06 | — | 1995-01-01 | — |
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Samoa | 2013-09-21 | 2020-01-02 | — | 2012-05-10 | — |
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San Marino | 1960-03-04 | 2004-12-14 | — | — | — |
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São Tomé and Príncipe | 1998-05-12 | 2008-07-03 | — | — | — |
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Saudi Arabia | 2004-03-11 | 2013-08-03 | 2021-01-16 | 2005-12-11 | 2013-08-03 |
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Senegal | 1963-12-21 | 1978-01-24 | — | 1995-01-01 | — |
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Serbia | 1992-04-27 [j] | 1997-01-02 [j] | 1994-02-25 [j] | — | 2010-10-20 |
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Seychelles | 2002-11-07 | 2002-11-07 | — | — | — |
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Sierra Leone | 1997-06-17 | 1997-06-17 | — | 1995-07-23 | — |
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Singapore | 1995-02-23 | 1995-02-23 | 1995-02-23 | 1995-01-01 | — |
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Slovakia | 1993-01-01 | 1993-01-01 | 1993-01-01 | 1995-01-01 | 2005-04-28 |
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Slovenia | 1991-06-25 | 1994-03-01 | 1998-03-12 | 1995-07-30 | 2005-04-28 |
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Solomon Islands | — | — | — | 1996-07-26 | — |
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Somalia | — | — | — | — | — |
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South Africa | 1947-12-01 | 1999-03-16 | 1997-07-14 | 1995-01-01 | — |
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South Sudan | — | — | — | — | — |
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Spain | 1884-07-07 | 1989-11-16 | 1981-03-19 | 1995-01-01 | 2013-11-06 |
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Sri Lanka | 1952-12-29 | 1982-02-26 | — | 1995-01-01 | — |
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Sudan | 1984-04-16 | 1984-04-16 | — | — | — |
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Suriname | 1975-11-25 | — | — | 1995-01-01 | — |
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Sweden | 1885-07-01 | 1978-05-17 | 1983-10-01 | 1995-01-01 | 2007-12-27 |
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Switzerland | 1884-07-07 | 1978-01-24 | 1981-08-09 | 1995-07-01 | 2008-07-01 |
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Syria | 1924-09-01 | 2003-06-26 | — | — | — |
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Taiwan (Republic of China) | — | — | — | 2002-01-01 | — |
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Tajikistan | 1991-12-25 [a] | 1991-12-25 | 1991-12-25 | 2013-03-02 | — |
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Tanzania | 1963-06-16 | 1999-09-14 | — | 1995-01-01 | — |
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Thailand | 2008-05-02 | 2009-09-24 | — | 1995-01-01 | — |
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Timor Leste | — | — | — | — | — |
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Togo | 1967-09-10 | 1978-01-24 | — | 1995-05-31 | — |
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Tonga | 2001-06-14 | — | — | 2007-07-27 | — |
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Trinidad and Tobago | 1964-08-01 | 1994-03-10 | 1994-03-10 | 1995-03-01 | — |
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Tunisia | 1884-07-07 | 2001-12-10 | 2004-05-23 | 1995-03-29 | — |
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Turkey | 1925-10-10 | 1996-01-01 | 1998-11-30 | 1995-03-26 | — |
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Turkmenistan | 1991-12-25 [a] | 1991-12-25 | — | — | — |
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Tuvalu | — | — | — | — | — |
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Uganda | 1965-06-14 | 1995-02-09 | — | 1995-01-01 | — |
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Ukraine | 1991-12-25 [a] | 1991-12-25 | 1997-07-02 | 2008-05-16 | 2005-04-28 |
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United Arab Emirates | 1996-09-19 | 1999-03-10 | 2021-05-17 | 1996-04-10 | — |
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United Kingdom | 1884-07-07 [k] | 1978-01-24 [l] | 1980-12-29 [m] | 1995-01-01 [n] | 2006-03-22 [n] |
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United States of America | 1887-05-30 | 1978-01-24 | 1980-08-19 | 1995-01-01 | 2013-12-18 |
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Uruguay | 1967-03-18 | — | — | 1995-01-01 | — |
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Uzbekistan | 1991-12-25 [a] | 1991-12-25 | 2002-01-12 | — | 2006-07-19 |
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Vanuatu | — | — | — | 2012-08-24 | — |
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Holy See (Vatican City) | 1960-09-29 | — | — | — | — |
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Venezuela | 1995-09-12 | — | — | 1995-01-01 | — |
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Vietnam | 1949-03-08 | 1993-03-10 | 2021-06-01 | 2007-01-11 | — |
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Yemen | 2007-02-15 | — | — | — | — |
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Zambia | 1965-04-06 | 2001-11-15 | — | 1995-01-01 | — |
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Zimbabwe | 1980-04-18 | 1997-06-11 | — | 1995-03-05 | — |
On 10 November 2021, Jamaica deposited its instrument of accession to the PCT, thus becoming the 154th Contracting State of the PCT, and on 10 February 2022, will become bound by the PCT.
On 5 November 2021, Kiribati (country code: KI) deposited its instrument of accession to the Paris Convention for the Protection of Industrial Property, thus bringing the total number of States party to that Convention to 178. Kiribati will become bound by the Paris Convention on 5 February 2022.
The United Kingdom extended the application of the PCT to the Isle of Man with effect from 29 October 1983.
With effect from 1 January 2021, the United Kingdom will extend the application of the PCT to the territory of Gibraltar