| Contracting Party | Treaty | Signature | Instrument | In Force | Details |
|---|
| Liberia | Berne Convention | | Accession: December 8, 1988 | March 8, 1989 | Details |
| Liberia | Madrid Agreement (Marks) | | Accession: September 25, 1995 | December 25, 1995 | Details |
| Liberia | Madrid Protocol | | Accession: September 11, 2009 | December 11, 2009 | |
| Liberia | Paris Convention | | Accession: May 27, 1994 | August 27, 1994 | Details |
| Liberia | Patent Cooperation Treaty | | Accession: May 27, 1994 | August 27, 1994 | |
| Liberia | Patent Law Treaty | June 2, 2000 | | | |
| Liberia | Phonograms Convention | | Accession: September 16, 2005 | December 16, 2005 | |
| Liberia | Rome Convention | | Accession: September 16, 2005 | December 16, 2005 | |
| Liberia | Washington Treaty | May 26, 1989 | | | |
| Liberia | WIPO Convention | | Accession: December 8, 1988 | March 8, 1989 | |
