Patent Cooperation Treaty Update

                              Accession by Cyprus

The United States Patent and Trademark Office received notification from
the World Intellectual Property Organization (WIPO) that Cyprus
deposited its instrument of accession to the PCT on January 1, 1998.
Cyprus will become a Contracting State of the PCT on April 1, 1998.
Consequently, nationals and residents of Cyprus are entitled to file
international applications under the PCT on and after April 1, 1998, and
from the same date it is possible to file international applications
designating and electing Cyprus (country code: CY).

Since Cyprus will also become bound by the European Patent Convention on
April 1, 1998, it will be possible, in any international application
filed on or after that date, to designate Cyprus for the purpose of
obtaining a European patent in addition to or instead of a national
patent. Any international application filed on or after that date and
containing the designation of a State party to the European Patent
Convention will include the designation of Cyprus unless expressly
excluded. 

                             Accession by Croatia

The United States Patent and Trademark Office received notification from
the World Intellectual Property Organization (WIPO) that Croatia
deposited its instrument of accession to the PCT on April 1, 1998.
Croatia will become a Contracting State of the PCT on July 1, 1998.
Consequently, nationals and residents of Croatia are entitled to file
international applications under the PCT on and after July 1, 1998, and
from the same date it is possible to file international applications
designating and electing Croatia (country code: HR).

                        Listing of PCT Member Countries
   

Country                Instrument     Date of Deposit    Entry into
                                      of Instrument      Force1

 (1) Central African   Accession      15 September 1971  24 January 1978
     Republic2 
 (2) Senegal2          Ratification   08 March 1972      24 January 1978 
 (3) Madagascar        Ratification   27 March 1972      24 January 1978
 (4) Malawi5           Accession      16 May 1972        24 January 1978 
 (5) Cameroon2         Accession      15 March 1973      24 January 1978 
 (6) Chad2             Accession      12 February 1974   24 January 1978 
 (7) Togo2             Ratification   28 January 1975    24 January 1978 
 (8) Gabon2            Accession      06 March 1975      24 January 1978 
 (9) United States     Ratification   26 November 1975   24 January 1978 
     of America
(10) Germany3          Ratification   19 July 1976       24 January 1978 
(11) Congo2            Accession      08 August 1977     24 January 1978 
(12) Switzerland3      Ratification   14 September 1977  24 January 1978 
(13) United Kingdom3   Ratification   24 October 1977    24 January 1978 
(14) France3           Ratification   25 November 1977   25 February 1978 
(15) Russian           Ratification   29 December 1977   29 March 1978 
     Federation6
(16) Brazil            Ratification   09 January 1978    09 April 1978 
(17) Luxembourg3       Ratification   31 January 1978    30 April 1978 
(18) Sweden3           Ratification   17 February 1978   17 May 1978 
(19) Japan             Ratification   01 July 1978       01 October 1978
(20) Denmark3          Ratification   01 September 1978  01 December 1978 
(21) Austria3          Ratification   23 January 1979    23 April 1979 
(22) Monaco3           Ratification   22 March 1979      22 June 1979 
(23) Netherlands3      Ratification   10 April 1979      10 July 1979 
(24) Romania           Ratification   23 April 1979      23 July 1979 
(25) Norway            Ratification   01 October 1979    01 January 1980 
(26) Liechtenstein3    Accession      19 December 1979   19 March 1980 
(27) Australia         Accession      31 December 1979   31 March 1980 
(28) Hungary           Ratification   27 March 1980      27 June 1980 
(29) Democratic        Accession      08 April 1980      08 July 1980
     People's Republic 
     of Korea (North Korea)
(30) Finland           Ratification   08 April 1980      08 July 1980
(31) Belgium3          Ratification   14 September 1981  14 December 1981 
(32) Sri Lanka         Accession      26 November 1981   26 February 1982 
(33) Mauritania2       Accession      13 January 1983    13 April 1983
(34) Sudan5            Accession      16 January 1984    16 April 1984
(35) Bulgaria          Accession      21 February 1984   21 May 1984 
(36) Republic of       Accession      10 May 1984        10 August 1984 
     Korea (South Korea)
(37) Mali2             Accession      19 July 1984       19 October 1984 
(38) Barbados          Accession      12 December 1984   12 March 1985 
(39) Italy3            Ratification   28 December 1984   
(40) Benin2            Accession      26 November 1986   26 February 1987 
(41) Burkina Faso2     Accession      21 December 1988   21 March 1989 
(42) Spain3            Accession      16 August 1989     16 November 1989 
(43) Canada            Ratification   02 October 1989    02 January 1990 
(44) Greece3           Accession      09 July 1990       09 October 1990 
(45) Poland            Accession      25 September 1990  25 December 1990 
(46) Cote d'Ivoire2    Ratification   31 January 1991    30 April 1991 
(47) Guinea2           Accession      27 February 1991   27 May 1991 
(48) Mongolia          Accession      27 February 1991   27 May 1991 
(49) Czech Republic    Declaration4   18 December 1992   01 January 1993 
(50) Ireland3          Ratification   01 May 1992        01 August 1992 
(51) Portugal3         Accession      24 August 1992     24 November 1992 
(52) New Zealand       Accession      01 September 1992  01 December 1992 
(53) Ukraine           Declaration4   21 September 1992  25 December 1991
(54) Viet Nam          Accession      10 December 1992   10 March 1993 
(55) Slovakia          Declaration4   30 December 1992   01 January 1993 
(56) Niger2            Accession      21 December 1992   21 March 1993 
(57) Kazakstan6        Declaration4   16 February 1993   25 December 1991 
(58) Belarus6          Declaration4   14 April 1993      25 December 1991 
(59) Latvia            Accession      07 June 1993       07 September 1993 
(60) Uzbekistan        Declaration4   18 August 1993     25 December 1991 
(61) China             Accession      01 October 1993    01 January 1994 
(62) Slovenia          Accession      01 December 1993   01 March 1994 
(63) Trinidad and      Accession      10 December 1993   10 March 1994 
     Tobago
(64) Georgia           Declaration4   18 January 1994    25 December 1991 
(65) Kyrgyzstan6       Declaration4   14 February 1994   25 December 1991 
(66) Republic of       Declaration4   14 February 1994   25 December 1991 
     Moldova6
(67) Tajikistan        Declaration4   14 February 1994   25 December 1991
(68) Kenya5            Accession      08 March 1994      08 June 1994
(69) Lithuania         Accession      05 April 1994      05 July 1994
(70) Armenia6          Declaration4   17 May 1994        25 December 1991
(71) Estonia           Accession      24 May 1994        24 August 1994
(72) Liberia           Accession      27 May 1994        27 August 1994
(73) Swaziland5        Accession      20 June 1994       20 September 1994
(74) Mexico            Accession      01 October 1994    01 January 1995
(75) Uganda5           Accession      09 November 1994   09 February 1995
(76) Singapore         Accession      23 November 1994   23 February 1995
(77) Iceland           Accession      23 December 1994   23 March 1995
(78) Turkmenistan6     Declaration4   01 March 1995      25 December 1991
(79) The former        Accession      10 May 1995        10 August 1995
     Yugoslav Republic 
     of Macedonia
(80) Albania           Accession      04 July 1995       04 October 1995
(81) Lesotho5          Accession      21 July 1995       21 October 1995
(82) Azerbaijan6       Accession      25 September 1995  25 December 1995
(83) Turkey            Accession      01 October 1995    01 January 1996
(84) Israel            Ratification   01 March 1996      01 June 1996
(85) Cuba              Accession      16 April 1996      16 July 1996
(86) Saint Lucia       Accession      30 May 1996        30 August 1996
(87) Bosnia and        Accession      7 June 1996        7 September 1996
     Herzegovina
(88) Federal Republic  Ratification   01 November 1996   01 February 1997
     of Yugoslavia7
(89) Ghana5            Accession      26 November 1996   26 February 1997
(90) Zimbabwe5         Accession      11 March 1997      11 June 1997
(91) Sierra Leone      Accession      17 March 1997      17 June 1997
(92) Indonesia         Accession      05 June 1997       05 September 1997
(93) Gambia5           Accession      09 September 1997  09 December 1997
(94) Guinea-Bissau     Accession      12 September 1997  12 December 1997
(95) Cyprus            Accession      01 January 1998    01 April 1998
(96) Croatia           Accession      01 April 1998      01 July 1998
                                                           
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 Member of African Intellectual Property Organization (OAPI) regional
patent system.                                             
                                                           
3 Member of European Patent Convention (EPC) regional patent system.
                                                           
4 Declaration of continued application.                    
                                                           
5 Member of African Regional Industrial Property Organization (ARIPO)
regional patent system.                                    

6 Member of Eurasian Patent Organization (EAPO) regional patent system.

7 The Federal Republic of Yugoslavia is comprised of the Republics of
Serbia and Montenegro. The World Intellectual Property Organization has
utilized the two-letter code "YU" to refer to the Federal Republic of
Yugoslavia becoming a party to the Patent Cooperation Treaty. The United
States understands that the scope of the territory covered by the
designation encompasses only the Republics of Serbia and Montenegro.
                                                           
April 14, 1998                                              BRUCE A. LEHMAN
                                        Assistant Secretary of Commerce and
                                     Commissioner of Patents and Trademarks