What are the consequences of a judgment of no interference-in-fact for future interferences?

Source: FAQ (MPEP-Based)BlueIron Update: 2024-09-29

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.

A judgment of no interference-in-fact has significant consequences for future interferences between the same parties. According to MPEP 2308.03(b):

“A judgment of no interference-in-fact bars any further interference between the same parties for claims to the same invention as the count of the interference.”

This means that once a judgment of no interference-in-fact is issued, the same parties cannot initiate another interference proceeding for claims related to the same invention that was the subject of the original interference count.

Topics: MPEP 2300 - Interference And Derivation Proceedings MPEP 2308.03(B) - No Interference - In - Fact Patent Law Patent Procedure
Tags: Contested Case Estoppel, Contested Case Jurisdiction, Search Procedures