Can the time period for filing a foreign priority claim be extended?

No, the time period for filing a foreign priority claim cannot be extended. As stated in MPEP 214.01: “This time period is not extendable.”

However, if you miss the deadline, there is a possibility to file a petition to accept an unintentionally delayed priority claim. The MPEP states: “If a claim for priority under 35 U.S.C. 119(a)-(d) or (f), 365(a) or (b), or 386(a) or (b) is presented after the time period set in 37 CFR 1.55, the claim may be accepted if it includes the required identification information and is accompanied by a grantable petition to accept the unintentionally delayed claim for priority.”

For more information on unintentionally delayed priority claims, refer to MPEP § 214.02.

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Topics: MPEP 200 - Types and Status of Application; Benefit and Priority, Patent Law, Patent Procedure
Tags: Extension, filing deadline, foreign priority, Unintentionally Delayed Claim