Manual of Patent Examining Procedure - MPEP

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2300 Interference Proceedings

2308.03(b) No Interference-in-Fact

A judgment of no interference-in-fact means that no interference is needed to resolve priority between the parties. Neither party has lost the interference for the purpose of estoppel, 37 CFR  41.127(a)(1), even if one of the parties suggested the interference.

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.

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