MPEP § 323.01(a) — Typographical Errors in Cover Sheet (Annotated Rules)

§323.01(a) Typographical Errors in Cover Sheet

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

This page consolidates and annotates all enforceable requirements under MPEP § 323.01(a), 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.

Typographical Errors in Cover Sheet

This section addresses Typographical Errors in Cover Sheet. Primary authority: 37 CFR 3.34. Contains: 2 requirements, 3 guidance statements, and 3 other statements.

Key Rules

Topic

Assignment and Ownership (MPEP Chapter 300)

3 rules
StatutoryInformativeAlways
[mpep-323-01-a-77fc78cb547252d7bda0f6fc]
Correction of Cover Sheet Required
Note:
The party requesting correction must submit a copy of the original cover sheet for comparison.

See 37 CFR 3.34. The party requesting correction should also submit a copy of the original cover sheet, to facilitate comparison of the corrected cover sheet with the originally recorded document.

Jump to MPEP Source · 37 CFR 3.34Assignment and Ownership (MPEP Chapter 300)PTAB Contested Case Procedures
StatutoryInformativeAlways
[mpep-323-01-a-c68e5fa0b7ae9f696488700c]
Requirement for Typographical Correction of Cover Sheet
Note:
The party must file a corrected cover sheet to fix typographical errors, which will then be compared with the original record to ensure accuracy.

The party filing the corrected cover sheet should check the box titled "Other" in the area of the sheet requesting "Nature of Conveyance," and indicate that the submission is to correct an error in a cover sheet previously recorded. The party should also identify the reel and frame numbers (if known), and the nature of the correction (e.g., "correction to the spelling of assignor’s name" or "correction of application number or patent number"). The Office will then compare the corrected cover sheet with the original cover sheet and the originally recorded assignment document (or other document affecting title) to determine whether the correction is typographical in nature. If the error is typographical in nature, the Assignment Recordation Branch will record the corrected cover sheet and correct the Assignment Historical Database.

Jump to MPEP SourceAssignment and Ownership (MPEP Chapter 300)Grounds for ReissuePTAB Contested Case Procedures
MPEP GuidanceRequiredAlways
[mpep-323-01-a-90b61f620a953fa0381b3b03]
Fee Required for Cover Sheet Corrections
Note:
A party must pay a fee to correct typographical errors on a recorded cover sheet.

A party who wishes to correct a typographical error on a recorded cover sheet must submit the following to the Assignment Recordation Branch:

(C) the required fee for each application or patent to be corrected (37 CFR 3.41).

Jump to MPEP SourceAssignment and Ownership (MPEP Chapter 300)Fee RequirementsGrounds for Reissue
Topic

Grounds for Reissue

3 rules
StatutoryRecommendedAlways
[mpep-323-01-a-aab0a98f967bce4dc05842b0]
Requirement for Correcting Previously Recorded Cover Sheet
Note:
The party filing a corrected cover sheet must check 'Other' under 'Nature of Conveyance,' identify the nature of the correction, and indicate it is to correct an error in a previously recorded cover sheet.

The party filing the corrected cover sheet should check the box titled "Other" in the area of the sheet requesting "Nature of Conveyance," and indicate that the submission is to correct an error in a cover sheet previously recorded. The party should also identify the reel and frame numbers (if known), and the nature of the correction (e.g., "correction to the spelling of assignor’s name" or "correction of application number or patent number"). The Office will then compare the corrected cover sheet with the original cover sheet and the originally recorded assignment document (or other document affecting title) to determine whether the correction is typographical in nature. If the error is typographical in nature, the Assignment Recordation Branch will record the corrected cover sheet and correct the Assignment Historical Database.

Jump to MPEP SourceGrounds for ReissuePTAB Contested Case ProceduresReissue Patent Practice
StatutoryInformativeAlways
[mpep-323-01-a-6e3352522c1b05f0d4ba0609]
Correct Typographical Errors in Cover Sheet
Note:
The party filing a corrected cover sheet must indicate the nature of the correction and the Office will record it if the error is typographical.

The party filing the corrected cover sheet should check the box titled "Other" in the area of the sheet requesting "Nature of Conveyance," and indicate that the submission is to correct an error in a cover sheet previously recorded. The party should also identify the reel and frame numbers (if known), and the nature of the correction (e.g., "correction to the spelling of assignor’s name" or "correction of application number or patent number"). The Office will then compare the corrected cover sheet with the original cover sheet and the originally recorded assignment document (or other document affecting title) to determine whether the correction is typographical in nature. If the error is typographical in nature, the Assignment Recordation Branch will record the corrected cover sheet and correct the Assignment Historical Database.

Jump to MPEP SourceGrounds for ReissueReissue Patent PracticeAssignment and Ownership (MPEP Chapter 300)
MPEP GuidanceRequiredAlways
[mpep-323-01-a-80ac354fe6451b011782ce78]
Requirement for Correcting Typographical Errors on Cover Sheets
Note:
A party must submit the original document, a corrected cover sheet, and fees to correct typographical errors on recorded cover sheets.
A party who wishes to correct a typographical error on a recorded cover sheet must submit the following to the Assignment Recordation Branch:
  • (A) a copy of the originally recorded assignment document (or other document affecting title);
  • (B) a corrected cover sheet; and
  • (C) the required fee for each application or patent to be corrected (37 CFR 3.41).
Jump to MPEP SourceGrounds for ReissuePTAB Contested Case ProceduresReissue Patent Practice
Topic

PTAB Contested Case Procedures

2 rules
StatutoryRecommendedAlways
[mpep-323-01-a-a319f114637c994363f1667a]
Original Cover Sheet Needed for Correction
Note:
The party requesting correction must submit an original cover sheet to compare with the corrected version.

See 37 CFR 3.34. The party requesting correction should also submit a copy of the original cover sheet, to facilitate comparison of the corrected cover sheet with the originally recorded document.

Jump to MPEP Source · 37 CFR 3.34PTAB Contested Case ProceduresAssignment and Ownership (MPEP Chapter 300)
StatutoryRecommendedAlways
[mpep-323-01-a-8a76515cc3812523e98f77f8]
Correct Cover Sheet Errors Must Identify Reel, Frame, and Nature of Correction
Note:
Parties must identify reel and frame numbers (if known) and specify the nature of the correction when filing a corrected cover sheet to amend an error.

The party filing the corrected cover sheet should check the box titled "Other" in the area of the sheet requesting "Nature of Conveyance," and indicate that the submission is to correct an error in a cover sheet previously recorded. The party should also identify the reel and frame numbers (if known), and the nature of the correction (e.g., "correction to the spelling of assignor’s name" or "correction of application number or patent number"). The Office will then compare the corrected cover sheet with the original cover sheet and the originally recorded assignment document (or other document affecting title) to determine whether the correction is typographical in nature. If the error is typographical in nature, the Assignment Recordation Branch will record the corrected cover sheet and correct the Assignment Historical Database.

Jump to MPEP SourcePTAB Contested Case ProceduresGrounds for ReissueAssignment and Ownership (MPEP Chapter 300)

Citations

Primary topicCitation
Assignment and Ownership (MPEP Chapter 300)
PTAB Contested Case Procedures
37 CFR § 3.34
Assignment and Ownership (MPEP Chapter 300)
Grounds for Reissue
37 CFR § 3.41

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