What is the time limit for filing a petition after denial of reexamination?

The time limit for filing a petition after denial of reexamination is strictly defined. According to MPEP 2248:

“The requester may seek review by a petition to the Director under § 1.181 within one month of the mailing date of the examiner’s determination refusing ex parte reexamination.”

It’s important to note that this one-month period is strictly enforced. Any request for an extension of this time period “can only be entertained by filing a petition under 37 CFR 1.183 with appropriate fee to waive the time provisions of 37 CFR 1.515(c).” Missing this deadline without proper extension can result in the reexamination file being processed as concluded.

To learn more:

Topics: MPEP 2200 - Citation Of Prior Art And Ex Parte Reexamination Of Patents, MPEP 2248 - Petition From Denial Of Request Filed Under 35 U.S.C. 302, Patent Law, Patent Procedure
Tags: ex parte reexamination, patent procedure, Petition Timeframe, Reexamination Denial