| Contracting Party | Treaty | Signature | Instrument | In Force | Details |
|---|
| Sri Lanka | Berne Convention | | Declaration of Continued Application: July 20, 1959 | February 4, 1948 | Details |
| Sri Lanka | Madrid Agreement (Indications of Source) | | Accession: October 9, 1952 | December 29, 1952 | Details |
| Sri Lanka | Nairobi Treaty | October 24, 1981 | Ratification: January 19, 1984 | February 19, 1984 | |
| Sri Lanka | Paris Convention | | Accession: October 9, 1952 | December 29, 1952 | Details |
| Sri Lanka | Patent Cooperation Treaty | | Accession: November 26, 1981 | February 26, 1982 | |
| Sri Lanka | Trademark Law Treaty | | Accession: March 6, 1996 | August 1, 1996 | Details |
| Sri Lanka | WIPO Convention | | Accession: June 20, 1978 | September 20, 1978 | |
