| Country | Action | Action Date | Effective Date |
|---|
| ALBANIA | Accession | 28/10/2011 | 27/12/2011 |
| Antigua | Extension | 13/08/1970 | 12/10/1970 |
| Antilles | Extension | 01/01/1986 | |
| ARGENTINE REPUBLIC | Signature | 18/10/1907 | |
| Aruba | Extension | 01/01/1986 | |
| AUSTRALIA | Accession | 23/12/1996 | 21/02/1997 |
| AUSTRIA-HUNGARY | Signature | 18/10/1907 | |
| AUSTRIA-HUNGARY | Ratification | 27/11/1909 | |
| BAHRAIN | Accession | 30/06/2008 | 29/08/2008 |
| BANGLADESH | Accession | 28/12/2011 | 26/02/2012 |
| BELGIUM | Signature | 18/10/1907 | |
| BELGIUM | Ratification | 08/08/1910 | |
| BELIZE | Accession | 22/11/2002 | 21/01/2003 |
| BENIN | Accession | 18/07/2005 | 16/09/2005 |
| BOLIVIA | Signature | 18/10/1907 | |
| BOLIVIA | Ratification | 27/11/1909 | |
| BRAZIL | Signature | 18/10/1907 | |
| BRAZIL | Ratification | 05/01/1914 | |
| British Solomon Islands | Extension | 13/08/1970 | 12/10/1970 |
| Brunei | Extension | 13/08/1970 | 12/10/1970 |
| BULGARIA | Signature | 18/10/1907 | |
| BULGARIA | Ratification | 11/04/2000 | 10/06/2000 |
| BULGARIA | Declaration | 11/04/2000 | |
| BYELORUSSIA S S R | Declaration | 04/06/1962 | |
| CAMBODIA | Accession | 04/01/1956 | |
| CAMEROON | Accession | 01/08/1961 | |
| CANADA | Ratification | 10/05/1994 | 09/07/1994 |
| CHILE | Signature | 18/10/1907 | |
| CHILE | Accession | 19/11/1997 | 18/01/1998 |
| CHILE | Declaration | 19/11/1997 | 18/01/1998 |
| CHINA | Signature | 18/10/1907 | |
| CHINA | Ratification | 27/11/1909 | |
| COLOMBIA | Signature | 18/10/1907 | |
| COLOMBIA | Accession | 16/01/1997 | 17/03/1997 |
| CONGO, DEMOCRATIC REPUBLIC OF | Accession | 25/03/1961 | |
| COSTA RICA | Accession | 21/05/1999 | 20/07/1999 |
| CUBA | Signature | 18/10/1907 | |
| CUBA | Ratification | 22/02/1912 | |
| CYPRUS | Accession | 14/09/1993 | 12/11/1993 |
| CZECH REPUBLIC | Accession | 14/09/1993 | 01/01/1993 |
| CZECHOSLOVAKIA | Accession | 12/06/1922 | |
| DENMARK | Signature | 18/10/1907 | |
| DENMARK | Ratification | 27/11/1909 | |
| Dominica | Extension | 13/08/1970 | 12/10/1970 |
| DOMINICAN REPUBLIC | Signature | 18/10/1907 | |
| DOMINICAN REPUBLIC | Ratification | 09/07/1958 | |
| ECUADOR | Signature | 18/10/1907 | |
| ERITREA | Accession | 05/08/1997 | 04/10/1997 |
| ESTONIA | Accession | 03/07/2003 | 01/09/2003 |
| FINLAND | Accession | 09/06/1922 | |
| FRANCE | Signature | 18/10/1907 | |
| FRANCE | Ratification | 07/10/1910 | |
| GERMAN DEMOCRATIC REPUBLIC | Declaration | 06/09/1974 | |
| GERMANY | Signature | 18/10/1907 | |
| GERMANY | Ratification | 27/11/1909 | |
| GREECE | Signature | 18/10/1907 | |
| Grenada | Extension | 13/08/1970 | 12/10/1970 |
| GUATEMALA | Signature | 18/10/1907 | |
| GUATEMALA | Ratification | 15/03/1911 | |
| GUYANA | Accession | 26/11/1997 | 25/01/1998 |
| HAITI | Signature | 18/10/1907 | |
| HAITI | Ratification | 02/02/1910 | |
| HONDURAS | Accession | 01/12/1961 | 30/01/1962 |
| ICELAND | Accession | 08/12/1955 | |
| IRAQ | Accession | 31/08/1970 | 30/10/1970 |
| IRAQ | Declaration | 01/11/1970 | |
| IRELAND, REPUBLIC OF | Accession | 07/05/2002 | 06/07/2002 |
| IRELAND, REPUBLIC OF | Declaration | 07/05/2002 | |
| ISRAEL | Accession | 18/04/1962 | 17/06/1962 |
| ISRAEL | Declaration | 23/04/1968 | |
| ITALY | Signature | 18/10/1907 | |
| JAPAN | Signature | 18/10/1907 | |
| JAPAN | Ratification | 13/12/1911 | |
| JORDAN | Accession | 28/11/1991 | 27/01/1992 |
| KOREA REPUBLIC OF | Accession | 23/12/1999 | 21/02/2000 |
| KUWAIT | Accession | 16/07/2003 | 14/09/2003 |
| KYRGYZSTAN | Succession | 17/04/1992 | 04/06/1992 |
| LAOS | Accession | 18/07/1955 | |
| LATVIA | Accession | 13/06/2001 | 12/08/2001 |
| LEBANON | Accession | | 14/04/1968 |
| LEBANON | Declaration | 14/04/1968 | |
| LIBYA | Accession | 04/07/1996 | 02/09/1996 |
| LIECHTENSTEIN | Accession | 25/07/1994 | 23/09/1994 |
| LIECHTENSTEIN | Reservation | 25/07/1994 | 23/09/1994 |
| LITHUANIA | Declaration | 10/11/2004 | 01/01/1900 |
| LITHUANIA | Def EIF | 11/11/2004 | 09/01/2005 |
| LUXEMBOURG | Signature | 18/10/1907 | |
| LUXEMBOURG | Ratification | 05/09/1912 | |
| MACEDONIA THE FYR OF | Accession | 19/12/2000 | 17/02/2001 |
| MADAGASCAR | Accession | 07/10/2009 | 06/12/2009 |
| MALAYSIA | Accession | 07/03/2002 | 06/05/2002 |
| MALTA | Accession | | 07/09/1968 |
| MEXICO | Signature | 18/10/1907 | |
| MEXICO | Ratification | 27/11/1909 | |
| MONTENEGRO | Signature | 18/10/1907 | |
| MOROCCO | Accession | 05/04/2001 | 04/06/2001 |
| NETHERLANDS THE | Signature | 18/10/1907 | |
| NETHERLANDS THE | Ratification | 27/11/1909 | |
| NETHERLANDS THE | Application | 01/01/1986 | |
| NETHERLANDS THE | Declaration | 18/10/2010 | |
| NICARAGUA | Accession | 16/12/1909 | 14/02/1910 |
| NIGERIA | Accession | 18/12/1986 | 16/02/1987 |
| NORWAY | Signature | 18/10/1907 | |
| NORWAY | Ratification | 19/09/1910 | |
| PANAMA | Signature | 18/10/1907 | |
| PANAMA | Ratification | 11/09/1911 | |
| PARAGUAY | Signature | 18/10/1907 | |
| PARAGUAY | Ratification | 25/04/1933 | |
| PERSIA | Signature | 18/10/1907 | |
| PERU | Signature | 18/10/1907 | |
| PHILIPPINES | Accession | 14/07/2010 | 12/09/2010 |
| POLAND | Accession | 26/05/1922 | |
| PORTUGAL | Signature | 18/10/1907 | |
| PORTUGAL | Ratification | 13/04/1911 | |
| QATAR | Accession | 03/10/2005 | 02/12/2005 |
| ROUMANIA | Signature | 18/10/1907 | |
| ROUMANIA | Ratification | 01/03/1912 | |
| RUSSIA | Signature | 18/10/1907 | |
| RUSSIA | Ratification | 27/11/1909 | |
| RWANDA | Accession | 29/04/2011 | |
| SALVADOR | Signature | 18/10/1907 | |
| SALVADOR | Ratification | 27/11/1909 | |
| SAUDI ARABIA | Accession | 21/11/2001 | 20/01/2002 |
| SENEGAL | Accession | 01/08/1977 | 30/09/1977 |
| SERBIA | Signature | 18/10/1907 | |
| SIAM | Signature | 18/10/1907 | |
| SIAM | Ratification | 12/03/1910 | |
| SINGAPORE | Accession | 13/07/1993 | 11/09/1993 |
| SLOVAK REPUBLIC | Accession | 15/04/1993 | 01/01/1993 |
| SLOVENIA | Accession | 29/01/2004 | 29/03/2004 |
| SOUTH AFRICA | Accession | | 21/12/1998 |
| SOVIET UNION | Accession | 07/03/1955 | |
| SPAIN | Signature | 18/10/1907 | |
| SPAIN | Ratification | 18/03/1913 | |
| St Christopher, Nevis and Anguilla | Extension | 13/08/1970 | 12/10/1970 |
| St Lucia | Extension | 13/08/1970 | 12/10/1970 |
| St Vincent | Extension | 13/08/1970 | 12/10/1970 |
| SUDAN | Accession | | 02/12/1966 |
| SURINAME | Accession | 28/10/1992 | 27/12/1992 |
| SWAZILAND | Accession | 26/10/1970 | 25/12/1970 |
| SWEDEN | Signature | 18/10/1907 | |
| SWEDEN | Ratification | 27/11/1909 | |
| SWITZERLAND | Signature | 18/10/1907 | |
| SWITZERLAND | Ratification | 12/05/1910 | |
| TOGO | Def EIF | 18/10/2004 | 17/12/2004 |
| TURKEY | Declaration | 16/10/1907 | |
| TURKEY | Signature | 18/10/1907 | |
| UGANDA | Accession | 01/03/1966 | 30/04/1966 |
| UKRAINE | Accession | 04/04/1962 | |
| UNITED ARAB EMIRATES | Accession | 06/11/2008 | 05/01/2009 |
| UNITED ARAB REPUBLIC | Accession | | 04/11/1968 |
| UNITED KINGDOM | Signature | 18/10/1907 | |
| UNITED KINGDOM | Ratification | 13/08/1970 | 12/10/1970 |
| UNITED KINGDOM | Declaration | 13/08/1970 | 12/10/1970 |
| UNITED STATES OF AMERICA | Declaration | 16/10/1907 | |
| UNITED STATES OF AMERICA | Signature | 18/10/1907 | |
| UNITED STATES OF AMERICA | Ratification | 27/11/1909 | |
| UPPER VOLTA | Accession | 30/08/1961 | |
| URUGUAY | Signature | 18/10/1907 | |
| VENEZUELA | Signature | 18/10/1907 | |
| VIETNAM, SOCIALIST REP OF | Accession | 29/12/2011 | 27/02/2012 |
| YUGOSLAVIA | Declaration | 11/04/1994 | |
| ZAMBIA | Accession | 01/11/1999 | 31/12/1999 |