MPEP § 2231 — Processing of Request Corrections (Annotated Rules)

§2231 Processing of Request Corrections

USPTO MPEP version: BlueIron's Update: 2025-12-31

This page consolidates and annotates all enforceable requirements under MPEP § 2231, including statutory authority, regulatory rules, examiner guidance, and practice notes. It is provided as guidance, with links to the ground truth sources. This is information only, it is not legal advice.

Processing of Request Corrections

This section addresses Processing of Request Corrections. Primary authority: 35 U.S.C. 302. Contains: 1 guidance statement.

Key Rules

Topic

Central Reexamination Unit Processing

1 rules
StatutoryRecommendedAlways
[mpep-2231-039439cc08c5085867afbcad]
Submissions for Ex Parte Reexamination Must Be Marked Correctly
Note:
All submissions to cure an incomplete ex parte reexamination request must be marked ‘Mail Stop Ex Parte Reexam’ and processed by the Central Reexamination Unit.

All processing of submissions to cure an incomplete request for ex parte reexamination filed under 35 U.S.C. 302 (see MPEP § 2227) is carried out by the Central Reexamination Unit (CRU). Any such submission should be marked “Mail Stop Ex Parte Reexam” in the manner discussed in MPEP § 2224 so that the submission may be promptly forwarded to the staff of the CRU.

Jump to MPEP SourceCentral Reexamination Unit ProcessingEx Parte ReexaminationEx Parte Reexamination Request

Citations

Primary topicCitation
Central Reexamination Unit Processing35 U.S.C. § 302
Central Reexamination Unit ProcessingMPEP § 2224
Central Reexamination Unit ProcessingMPEP § 2227

Source Text from USPTO’s MPEP

This is an exact copy of the MPEP from the USPTO. It is here for your reference to see the section in context.

BlueIron Last Updated: 2025-12-31