35 U.S.C. § 253 — Disclaimer (MPEP Coverage Index) – BlueIron IP

This page consolidates MPEP guidance interpreting 35 U.S.C. § 253, including 41 rules 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.

Invalid Claim Does Not Invalidate OthersMPEP 1490Prohibited
Patentee May Disclaim ClaimsMPEP 1490Required
Patentee May Disclaim Patent TermMPEP 1490
Patentee Can Disclaim Patent TermMPEP 1490Permitted
AIA vs Pre-AIA Statutory DisclaimersMPEP 1490
Deceptive Intention Clause Eliminated From Statutory Disclaimer RequirementMPEP 1490
Requirement for Pre-AIA Statutory DisclaimersMPEP 1490
Patent Owner Can Disclaim ClaimsMPEP 1490Permitted
Statutory Disclaimer Cannot Amend ClaimsMPEP 1490Prohibited
Patent Involvement in PTAB Interference Requires ComplianceMPEP 1490
Certificates of Correction Branch Handles Statutory and Terminal Disclaimers Except in Pending ApplicationsMPEP 1490
Certificate of Correction for Terminal DisclaimerMPEP 1490
Patentee Can Disclaim Terminal Part of Patent TermMPEP 1490Permitted
Disclaim Must Cover Entire Patent TermMPEP 1490Required
Disclaiming Individual Claim Terms Not AllowedMPEP 1490
Claims Cannot Have Individual Terminal DisclaimersMPEP 1490
Conditional Disclaimers ProhibitedMPEP 1490Prohibited
Disclaimant Must Identify Interest and Effective DateMPEP 1490Recommended
Reissue Not Available to Withdraw Terminal DisclaimerMPEP 1490
Reissue Cannot Nullify Terminal DisclaimerMPEP 1490
Reissue Only Extends Unexpired Patent TermMPEP 1490
Reissue Cannot Extend Patent Term With Terminal DisclaimerMPEP 1490
Statutory Patent Term Begins with Terminal DisclaimerMPEP 1490
Patent Term Reduced by Disclaimed PortionMPEP 1490Required
Disclaimed Claims Not Counted for FeesMPEP 2250.03
Canceled Claim Not Counted for Excess Fee CalculationsMPEP 2250.03
Statutory Disclaimer for Same InventionMPEP 2303.02
Patentee and Applicant Must Claim Same InventionMPEP 2303.02Required
Patentee Can Disclaim Patent TermMPEP 804.02Permitted
Terminal Disclaimer Must Cover All ClaimsMPEP 804.02
Terminal Disclaimer Must Cover All ClaimsMPEP 804.02Required

Patentee May Disclaim ClaimsMPEP 1490Required
Disclaim Must Cover Entire Patent TermMPEP 1490Required
Patent Term Reduced by Disclaimed PortionMPEP 1490Required
Outstanding Issues Must Be Resolved Before Interference SuggestionMPEP 2303.02Required
Administrative Trial Must Be Resolved Before Interference SuggestedMPEP 2303.02Required
Patentee and Applicant Must Claim Same InventionMPEP 2303.02Required
Terminal Disclaimer Must Cover All ClaimsMPEP 804.02Required

Requirement for Terminal Disclaimers on Patent TermsMPEP 1490
Terminal Disclaimer Affects Patent Term AdjustmentMPEP 1490Permitted
Patent Term Cannot Be Adjusted Beyond Disclaimed DateMPEP 1490Permitted
Patents Undergoing Reexamination or Reissue Must Complete ExaminationMPEP 2303.02
Patents Subject to Other Office ProceedingsMPEP 2303.02Permitted
Petition for Late Maintenance Fee AcceptanceMPEP 2303.02Permitted
Patentee Can Disclaim Excess Patent Term AdjustmentMPEP 2733Permitted
Statutory Disclaimer and Reissue Option for Patent ClaimsMPEP 2813.01Permitted

MPEP Section	Rules
MPEP § 1490	Invalid Claim Does Not Invalidate OthersMPEP 1490Prohibited Patentee May Disclaim ClaimsMPEP 1490Required Patentee May Disclaim Patent TermMPEP 1490 Patentee Can Disclaim Patent TermMPEP 1490Permitted AIA vs Pre-AIA Statutory DisclaimersMPEP 1490 Deceptive Intention Clause Eliminated From Statutory Disclaimer RequirementMPEP 1490 Requirement for Pre-AIA Statutory DisclaimersMPEP 1490 Patent Owner Can Disclaim ClaimsMPEP 1490Permitted Statutory Disclaimer Cannot Amend ClaimsMPEP 1490Prohibited Patent Involvement in PTAB Interference Requires ComplianceMPEP 1490 Requirement for Terminal Disclaimers on Patent TermsMPEP 1490 Terminal Disclaimer Affects Patent Term AdjustmentMPEP 1490Permitted Patent Term Cannot Be Adjusted Beyond Disclaimed DateMPEP 1490Permitted Certificates of Correction Branch Handles Statutory and Terminal Disclaimers Except in Pending ApplicationsMPEP 1490 Certificate of Correction for Terminal DisclaimerMPEP 1490 Patentee Can Disclaim Terminal Part of Patent TermMPEP 1490Permitted Disclaim Must Cover Entire Patent TermMPEP 1490Required Disclaiming Individual Claim Terms Not AllowedMPEP 1490 Claims Cannot Have Individual Terminal DisclaimersMPEP 1490 Conditional Disclaimers ProhibitedMPEP 1490Prohibited Disclaimant Must Identify Interest and Effective DateMPEP 1490Recommended Reissue Not Available to Withdraw Terminal DisclaimerMPEP 1490 Reissue Cannot Nullify Terminal DisclaimerMPEP 1490 Reissue Only Extends Unexpired Patent TermMPEP 1490 Reissue Cannot Extend Patent Term With Terminal DisclaimerMPEP 1490 Statutory Patent Term Begins with Terminal DisclaimerMPEP 1490 Patent Term Reduced by Disclaimed PortionMPEP 1490Required
MPEP § 2250.03	Disclaimed Claims Not Counted for FeesMPEP 2250.03 Canceled Claim Not Counted for Excess Fee CalculationsMPEP 2250.03
MPEP § 2303.02	Patents Undergoing Reexamination or Reissue Must Complete ExaminationMPEP 2303.02 Patents Subject to Other Office ProceedingsMPEP 2303.02Permitted Petition for Late Maintenance Fee AcceptanceMPEP 2303.02Permitted Outstanding Issues Must Be Resolved Before Interference SuggestionMPEP 2303.02Required Administrative Trial Must Be Resolved Before Interference SuggestedMPEP 2303.02Required Statutory Disclaimer for Same InventionMPEP 2303.02 Patentee and Applicant Must Claim Same InventionMPEP 2303.02Required
MPEP § 2733	Patentee Can Disclaim Excess Patent Term AdjustmentMPEP 2733Permitted
MPEP § 2813.01	Statutory Disclaimer and Reissue Option for Patent ClaimsMPEP 2813.01Permitted
MPEP § 804.02	Patentee Can Disclaim Patent TermMPEP 804.02Permitted Terminal Disclaimer Must Cover All ClaimsMPEP 804.02 Terminal Disclaimer Must Cover All ClaimsMPEP 804.02Required

Related Provisions

Based on MPEP Last Modified: 10/30/2024 08:50:22

35 U.S.C. § 253 — Disclaimer (MPEP Coverage Index) – BlueIron IP

35 U.S.C. § 253 Disclaimer

Official MPEP § 253 — Disclaimer

35 U.S.C. 253 Disclaimer.

Verbatim in MPEP

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Key Interpretations

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