News & Analysis as of August 10, 2025

Burden of Proof

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The U.S. Patent and Trademark Office is an agency of the United States Department of Commerce that serves a fundamental role in the U.S. intellectual property system by issuing patents and registering trademarks.... more +

What Should the USPTO Consider Changing for Implementing Post-Final Written Decision Estoppel in Ex Parte Reexamination Based on...

Sterne, Kessler, Goldstein & Fox P.L.L.C. on 7/30/2025

The estoppel provision of 35 U.S.C. § 315(e)(1) had largely prevented requesters from challenging claims of a patent via ex parte reexamination after an inter partes review (IPR) that resulted in a final written decision...more

Federal Circuit Appeals from the PTAB and ITC: Summaries of Key 2021 Decisions

Sterne, Kessler, Goldstein & Fox P.L.L.C. on 2/9/2022

[co-author: Jamie Dohopolski] Last year, the continued global COVID-19 pandemic forced American courts to largely continue the procedures set in place in 2020. The U.S. Court of Appeals for the Federal Circuit was no...more

Sensor Maker Cannot Shake Infringement Suit on Summary Judgment

Proskauer - New England IP Blog on 3/23/2016

A New Hampshire District Court recently denied defendant sensor makers’ attempt to tilt the case in their favor by denying summary judgment of invalidity and non-infringement. SignalQuest asserted three patents relating...more

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United States Patent and Trademark Office › Ex Partes Reexamination › Burden of Proof

What Should the USPTO Consider Changing for Implementing Post-Final Written Decision Estoppel in Ex Parte Reexamination Based on...

Federal Circuit Appeals from the PTAB and ITC: Summaries of Key 2021 Decisions

Sensor Maker Cannot Shake Infringement Suit on Summary Judgment

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