What is the purpose of listing prior art in a reexamination proceeding?

The purpose of listing prior art in a reexamination proceeding is to provide a comprehensive record of all the patents and printed publications that were considered during the reexamination process. According to MPEP 2257:

“A listing of the patents and printed publications relied upon by the examiner in rejecting the claims will be printed on the reexamination certificate.”

This listing ensures transparency in the examination process and helps patent practitioners and other interested parties understand the basis for the examiner’s decisions.

To learn more:

Topics: MPEP 2200 - Citation Of Prior Art And Ex Parte Reexamination Of Patents, MPEP 2257 - Listing Of Prior Art, Patent Law, Patent Procedure
Tags: patent examination, USPTO