What is an Ex Parte Reexamination Certificate?
An Ex Parte Reexamination Certificate is a document issued at the conclusion of an ex parte reexamination proceeding, except in specific cases of merger with reissue applications or inter partes reexamination proceedings. The MPEP states:
An ex parte reexamination certificate is issued at the close of each ex parte reexamination proceeding in which reexamination has been ordered under 37 CFR 1.525, except for the following two cases:
- Merger with a reissue application
- Merger with an inter partes reexamination proceeding
The certificate serves as an official record of the changes made to the patent as a result of the reexamination process.
To learn more:
Topics:
MPEP 2200 - Citation Of Prior Art And Ex Parte Reexamination Of Patents,
MPEP 2290 - Format Of Ex Parte Reexamination Certificate,
Patent Law,
Patent Procedure