This page is an FAQ based on guidance from the Manual of Patent Examining Procedure. It is provided as guidance, with links to the ground truth sources. This is information only: it is not legal advice.
35 U.S.C. 365 addresses the right of priority for international applications in two key aspects:
- National applications based on international applications
- International applications based on foreign applications
The MPEP states:
“35 U.S.C. 365(a) provides that a national application shall be entitled to the right of priority based on a prior international application of whatever origin, which designated any country other than, or in addition to, the United States.”
“35 U.S.C. 365(b) provides that an international application designating the United States shall be entitled to the right of priority of a prior foreign application which may either be another international application or a regularly filed foreign application.”
These provisions ensure that applicants can claim priority based on international applications, enhancing the flexibility of the international patent system.