USPTO Terminal Disclaimer Generator

Generate legally compliant terminal disclaimers to overcome double patenting rejections with precision and proper USPTO formatting.

#patent law#USPTO#intellectual-property#legal documents#prosecution
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Created by PromptLib Team

February 12, 2026

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You are a senior US patent prosecution attorney with 20+ years of experience at the USPTO. Draft a formal Terminal Disclaimer document to overcome a double patenting rejection under 37 CFR 1.321 and MPEP 1490. **Input Parameters:** - Subject Application Number: [APPLICATION_NUMBER] - Subject Application Filing Date: [FILING_DATE] (MM/DD/YYYY format) - Reference Patent Number: [PARENT_PATENT_NUMBER] (include issue date if known: [PARENT_ISSUE_DATE]) - Inventor(s): [INVENTOR_NAMES] - Current Assignee/Owner: [ASSIGNEE_NAME] - Entity Status: [ENTITY_STATUS] (Small/Micro/Large - for fee calculation) - Type of Double Patenting: [DOUBLE_PATENTING_TYPE] (Statutory obviousness-type double patenting) - Specific Claims Disclaimed: [CLAIMS_SCOPE] (e.g., 'all claims' or specific claim numbers) - Execution Method: [EXECUTION_METHOD] (Signature in person/registered practitioner/authorized officer) **Required Content:** 1. **Header**: Identify the subject application and reference patent with full numbers 2. **Disclaimer Statement**: Use exact statutory language: 'The owner, [ASSIGNEE_NAME], hereby disclaims the terminal part of the statutorily granted term of any patent granted on the above-identified application, which would extend beyond the expiration date of the full statutory term of U.S. Patent No. [PARENT_PATENT_NUMBER]...' 3. **Common Ownership Statement**: Explicitly state that the subject patent and reference patent will be commonly owned for their entire enforceable lives 4. **Irrevocability Clause**: Include statement that the disclaimer is binding upon successors, assigns, and purchasers 5. **Signature Block**: Format for [EXECUTION_METHOD] with name, title, and date lines 6. **Fee Calculation Section** (if [INCLUDE_FEE] is true): Calculate fee based on [ENTITY_STATUS] for 37 CFR 1.20(d) **Formatting Rules:** - Use formal legal document structure with numbered paragraphs - Include USPTO document identification headers - Ensure language complies with current MPEP 1490 requirements - Add notation box for 'PTO/SB/25' or equivalent form reference if applicable - Include certificate of mailing/electronic filing verification line **Warning Check**: Before outputting, verify that the disclaimer does not attempt to disclaim term for reasons other than double patenting, and ensure no attempt is made to recapture term already disclaimed. Output the complete document ready for signature and USPTO submission.

Best Use Cases

Responding to an obviousness-type double patenting rejection in a continuation or divisional application

Proactively filing a terminal disclaimer to overcome statutory double patenting before final rejection

Aligning patent terms between parent and child applications where the child claims obvious variants of the parent's invention

Filing terminal disclaimers for patent families with overlapping claim scope to ensure enforceability

Correcting terminal disclaimer defects identified in an Ex Parte Quayle action or other USPTO notice

Frequently Asked Questions

What is the difference between a terminal disclaimer and a statutory disclaimer?

A terminal disclaimer (37 CFR 1.321) disclaims the terminal portion of a patent term to overcome double patenting, while a statutory disclaimer (37 CFR 1.323) is used to disclaim specific claims or portions of a patent term for other reasons. Terminal disclaimers require common ownership statements and affect patent term adjustment calculations.

Does filing a terminal disclaimer affect Patent Term Adjustment (PTA)?

Yes. Under 35 U.S.C. 154(b)(2)(B), any term extended by PTA cannot extend beyond the date specified in the terminal disclaimer. The PTA is effectively limited by the terminal disclaimer date, meaning you lose PTA for the disclaimed period.

Can I file a terminal disclaimer after the patent has already issued?

Terminal disclaimers are typically filed during prosecution, but they can be filed post-issuance to overcome double patenting challenges during reissue proceedings or to ensure enforceability. However, post-issuance filing may have different procedural requirements and should be accompanied by a reissue application if claim corrections are needed.

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