| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| BRAZIL | Signature | 14/04/1891 | |
| FRANCE | Signature | 14/04/1891 | |
| FRANCE | Ratification | 15/06/1892 | |
| GUATEMALA | Signature | 14/04/1891 | |
| NEW ZEALAND | Succession | 17/05/1947 | |
| PORTUGAL | Accession | 07/11/1949 | |
| PORTUGAL | Signature | 14/04/1891 | |
| SPAIN | Signature | 14/04/1891 | |
| SPAIN | Ratification | 15/06/1892 | |
| Spanish Colonies | Accession | 15/12/1947 | |
| SWITZERLAND | Signature | 14/04/1891 | |
| SWITZERLAND | Ratification | 15/06/1892 | |
| TUNIS | Signature | 14/04/1891 | |
| TUNIS | Ratification | 15/06/1892 | |
| UNITED KINGDOM | Signature | 14/04/1891 | |
| UNITED KINGDOM | Ratification | 15/06/1892 |