| Country | Action | Action Date | Effective Date |
|---|
| ARGENTINE REPUBLIC | Signature | 21/03/1885 | |
| AUSTRIA | Signature | 21/03/1885 | |
| BELGIUM | Signature | 21/03/1885 | |
| BOLIVIA | Signature | 21/03/1885 | |
| BRAZIL | Signature | 21/03/1885 | |
| BULGARIA | Signature | 21/03/1885 | |
| Canada | Extension | 21/03/1885 | |
| CHILE | Signature | 21/03/1885 | |
| CHILE | Ratification | 22/09/1887 | |
| COLOMBIA | Signature | 21/03/1885 | |
| COSTA RICA | Accession | 03/02/1886 | |
| DENMARK | Signature | 21/03/1885 | |
| DOMINICAN REPUBLIC | Signature | 21/03/1885 | |
| ECUADOR | Signature | 21/03/1885 | |
| EGYPT | Signature | 21/03/1885 | |
| FRANCE | Signature | 21/03/1885 | |
| GERMANY | Signature | 21/03/1885 | |
| GREECE | Signature | 21/03/1885 | |
| GUATEMALA | Signature | 21/03/1885 | |
| HAITI | Signature | 21/03/1885 | |
| Hawaii | Extension | 21/03/1885 | |
| HONDURAS | Signature | 21/03/1885 | |
| HONDURAS | Ratification | 21/10/1889 | |
| HUNGARY | Signature | 21/03/1885 | |
| India | Extension | 21/03/1885 | |
| ITALY | Signature | 21/03/1885 | |
| JAPAN | Signature | 21/03/1885 | |
| LIBERIA | Signature | 21/03/1885 | |
| LUXEMBOURG | Signature | 21/03/1885 | |
| MEXICO | Signature | 21/03/1885 | |
| MONTENEGRO | Signature | 21/03/1885 | |
| NETHERLANDS THE | Signature | 21/03/1885 | |
| NICARAGUA | Signature | 21/03/1885 | |
| NORWAY | Signature | 21/03/1885 | |
| PARAGUAY | Signature | 21/03/1885 | |
| PERSIA | Signature | 21/03/1885 | |
| PERU | Accession | 13/08/1886 | |
| PORTUGAL | Signature | 21/03/1885 | |
| PORTUGAL | Ratification | 18/02/1886 | 24/02/1886 |
| ROUMANIA | Signature | 21/03/1885 | |
| RUSSIA | Signature | 21/03/1885 | |
| SALVADOR | Accession | 09/06/1887 | |
| SERBIA | Accession | 19/03/1886 | |
| SIAM | Signature | 21/03/1885 | |
| SPAIN | Signature | 21/03/1885 | |
| SWEDEN | Signature | 21/03/1885 | |
| SWITZERLAND | Signature | 21/03/1885 | |
| TURKEY | Accession | 02/02/1886 | |
| UNITED KINGDOM | Signature | 21/03/1885 | |
| UNITED STATES OF AMERICA | Signature | 21/03/1885 | |
| URUGUAY | Signature | 21/03/1885 | |
| VENEZUELA | Signature | 21/03/1885 | |