Listing of PCT Member Countries Country Instrument (1) Central African Republic[2] Accession (2) Senegal[2] Ratification (3) Madagascar Ratification (4) Malawi Accession (5) Cameroon[2] Accession (6) Chad[2] Accession (7) Togo[2] Ratification (8) Gabon[2] Accession (9) United States of America Ratification (10) Germany[3] Ratification (11) Congo[2] Accession (12) Switzerland[3] Ratification (13) United Kingdom[3] Ratification (14) France[3] Ratification (15) Russian Federation Ratification (16) Brazil Ratification (17) Luxembourg[3] Ratification (18) Sweden[3] Ratification (19) Japan Ratification (20) Denmark[3] Ratification (21) Austria[3] Ratification (22) Monaco[3] Ratification (23) Netherlands[3] Ratification (24) Romania Ratification (25) Norway Ratification (26) Liechtenstein[3] Accession (27) Australia Accession (28) Hungary Ratification (29) Democratic People's Republic of Korea (North Korea) Accession (30) Finland Ratification (31) Belgium[3] Ratification (32) Sri Lanka Accession (33) Mauritania[2] Accession (34) Sudan Accession (35) Bulgaria Accession (36) Republic of Korea (South Korea) Accession (37) Mali[2] Accession (38) Barbados Accession (39) Italy[3] Ratification (40) Benin[2] Accession (41) Burkina Faso[2] Accession (42) Spain[3] Accession (43) Canada Ratification (44) Greece[3] Accession (45) Poland Accession (46) Cote d'Ivoire[2] Ratification (47) Guinea[2] Accession (48) Mongolia Accession (49) Czech Republic Declaration[4] (50) Ireland[3] Ratification (51) Portugal[3] Accession (52) New Zealand Accession (53) Ukraine Declaration[4] (54) Viet Nam Accession (55) Slovakia Declaration[4] (56) Niger[2] Accession (57) Kazakhstan Declaration (58) Belarus Declaration[4] (59) Latvia Accession (60) Uzbekistan Declaration[4] (61) China Accession (62) Slovenia Accession (63) Trinidad and Tobago Accession (64) Georgia Declaration[4] (65) Kyrgyzstan Declaration[4] (66) Republic of Moldova Declaration[4] (67) Tajikistan Declaration[4] (68) Kenya Accession (69) Lithuania Accession (70) Armenia Declaration[4] (71) Estonia Accession (72) Liberia Accession (73) Swaziland Accession (74) Mexico Accession (75) Uganda Accession (76) Singapore Accession (continued) Deposit of Entry into Instrument Force[1] 15 September 1971 24 January 1978 08 March 1972 24 January 1978 27 March 1972 24 January 1978 16 May 1972 24 January 1978 15 March 1973 24 January 1978 12 February 1974 24 January 1978 28 January 1975 24 January 1978 06 March 1975 24 January 1978 26 November 1975 24 January 1978 19 July 1976 24 January 1978 08 August 1977 24 January 1978 14 September 1977 24 January 1978 24 October 1977 24 January 1978 25 November 1977 25 February 1978 29 December 1977 29 March 1978 09 January 1978 09 April 1978 31 January 1978 30 April 1978 17 February 1978 17 May 1978 01 July 1978 01 October 1978 01 September 1978 01 December 1978 23 January 1979 23 April 1979 22 March 1979 22 June 1979 10 April 1979 10 July 1979 23 April 1979 23 July 1979 01 October 1979 01 January 1980 19 December 1979 19 March 1980 31 December 1979 31 March 1980 27 March 1980 27 June 1980 08 April 1980 08 July 1980 01 July 1980 01 October 1980 14 September 1981 14 December 1981 26 November 1981 26 February 1982 13 January 1983 13 April 1983 16 January 1984 16 April 1984 21 February 1984 21 May 1984 10 May 1984 10 August 1984 19 July 1984 19 October 1984 12 December 1984 12 March 1985 28 December 1984 28 March 1985 26 November 1986 26 February 1987 21 December 1988 21 March 1989 16 August 1989 16 November 1989 02 October 1989 02 January 1990 09 July 1990 09 October 1990 25 September 1990 25 December 1990 31 January 1991 30 April 1991 27 February 1991 27 May 1991 27 February 1991 27 May 1991 18 December 1992 01 January 1993 01 May 1992 01 August 1992 24 August 1992 24 November 1992 01 September 1992 01 December 1992 21 September 1992 25 August 1991 10 December 1992 10 March 1993 30 December 1992 01 January 1993 21 December 1992 21 March 1993 16 February 1993 25 December 1991 14 April 1993 25 December 1991 07 June 1993 07 September 1993 18 August 1993 25 December 1993 01 October 1993 01 January 1994 01 December 1993 01 March 1994 10 December 1993 10 March 1994 18 January 1994 25 December 1991 14 February 1994 25 December 1991 14 February 1994 25 December 1991 14 February 1994 25 December 1991 08 March 1994 08 June 1994 05 April 1994 05 July 1994 17 May 1994 25 December 1991 24 May 1994 24 August 1994 27 May 1994 27 August 1994 20 June 1994 20 September 1994 01 October 1994 01 January 1995 09 November 1994 09 February 1995 23 November 1994 23 February 1995 [1]Although the PCT entered into force on January 24, 1978, the Assembly of the PCT Union fixed June 1, 1978, as the date from which international applications could be filed and demands for international preliminary examination could be submitted. [2]Members of African Intellectual Property Organization (OAPI) regional patent system. Only regional patent protection is available for OAPI countries. A designation of any country is an indication that all OAPI countries have been designated. Only one designation fee is due regardless of the number of OAPI member countries designated. [3]Member of European Patent Convention (EPC) regional patent system. Either national or European patents for member countries are available through PCT, except for France, Monaco, Belgium, Italy, Greece and Ireland for which only European patents are available if PCT is used. Note: Only one designation fee is due if European regional patent protection is sought for one, several or all EPC member countries under the PCT. [4]Declaration of continued application. December 29, 1994 BRUCE A. LEHMAN Assistant Secretary of Commerce and Commissioner of Patents and Trademarks