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DOC/PTO RIN: 0651-AD46 Publication ID: Spring 2020 
Title: ●Disclaimer Practice in Patents and Patent Applications 

The USPTO proposes to amend the Rules of Practice in Patent Cases to permit a terminal disclaimer to obviate nonstatutory double patenting based upon a reference application or patent owned by parties to a joint research agreement where the reference application or patent is neither prior art to nor commonly owned with the application or patent in which the disclaimer is filed. The USPTO also proposes to amend its rules of practice to explicitly permit the filing of preemptive terminal disclaimers with enforcement limitations. The USPTO further proposes to codify current practice permitting the preemptive filing of an affidavit or a declaration of attribution or of prior public disclosure to disqualify a disclosure as prior art in an application or patent under reexamination subject to the first-inventor-to-file provisions of the Leahy Smith America Invents Act.

Agency: Department of Commerce(DOC)  Priority: Substantive, Nonsignificant 
RIN Status: First time published in the Unified Agenda Agenda Stage of Rulemaking: Proposed Rule Stage 
Major: No  Unfunded Mandates: No 
EO 13771 Designation: Not subject to, not significant 
CFR Citation: 35 CFR 1.130    35 CFR 1.321   
Legal Authority: 35 U.S.C. 2(b)(2)    35 U.S.C. 253   
Legal Deadline:  None
Action Date FR Cite
NPRM  06/00/2020 
NPRM Comment Period End  08/00/2020 
Final Action  09/00/2020 
Final Action Effective  12/00/2020 
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Data Printed in the FR: No 
Agency Contact:
Raul Tamayo
Senior Legal Advisor
Department of Commerce
Patent and Trademark Office
P. O. Box 1450,
Alexandria, VA 22313-1450
Phone:571 272-7728
Fax:571 273-7728