What fees are required in an inter partes reexamination proceeding?

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.

Several fees are required in an inter partes reexamination proceeding:

• Fee for filing the request for inter partes reexamination
• Fees for the addition of claims by the patent owner during the proceeding (excess claims fees)
• Fees for an extension of time
• Fees for any appeal, brief, and oral hearing
• Fees for all petitions filed relating to a reexamination proceeding

As stated in the MPEP: All fees in an inter partes reexamination proceeding (including the fee for filing the request for inter partes reexamination (see MPEP § 2615)) are processed by the Central Reexamination Unit (CRU).

It’s important to note that No fee is required for the issuance of a reexamination certificate.