What fees are associated with patent reexamination?

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.

Patent reexamination involves several fees as outlined in MPEP 2233:

• Request fee (37 CFR 1.20(c)(1) or (c)(2))
• Addition of claims fees (37 CFR 1.20(c)(3) and (c)(4))
• Extension of time fees
• Appeal, appeal forwarding, and oral hearing fees (37 CFR 41.20(b))
• Petition fees (37 CFR 1.17(m) and 1.20(c)(6))

The MPEP states: “No fee is required for issue of the reexamination certificate.” Small entity and micro entity fee reductions may apply, with limitations for third-party requesters.