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Intellectual Property Protection › Burden of Proof › Appeals

Hudnell Law Group

Differing Burdens of Proof Limits Estoppel Effect of PTAB Final Written Decision

Hudnell Law Group on

On February 10, 2025, the United States Court of Appeals for the Federal Circuit issued a decision in Kroy IP Holdings, LLC v. Groupon, Inc., reversing and remanding a district court ruling that had dismissed Kroy’s patent...more

McDermott Will & Emery

Beach Buggy Battle: Stipulation Insufficient to Establish Trademark Distinctiveness

McDermott Will & Emery on

The US Court of Appeals for the Fourth Circuit found that a district court does not need to accept both parties’ stipulation that a mark is distinctive but instead is permitted to make an evidentiary inquiry in determining...more

Snell & Wilmer

Federal Circuit Holds Patent Owners Bear IPR Estoppel Burden of Proof

Snell & Wilmer on

The Federal Circuit recently held, for the first time, that patent owners bear the burden of proof for an Inter Partes Review (“IPR”) Estoppel affirmative defense that an alleged infringer failed to include prior art in a...more

Knobbe Martens

Notice Letters and Communications May Form a Basis for Personal Jurisdiction

Knobbe Martens on

APPLE INC. v. ZIPIT WIRELESS, INC. [OPINION]- PRECEDENTIAL - Before Hughes, Mayer and Stoll.  Appeal from the United States District Court for the Northern District of California. Summary: Notice letters and related...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

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

Sterne, Kessler, Goldstein & Fox P.L.L.C. on

[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

McDermott Will & Emery

For Simple, Predictable Tech, Undisclosed Variations May Be Covered by Written Description

McDermott Will & Emery on

In reversing a Patent Trial and Appeal Board (PTAB) decision, the US Court of Appeals for the Federal Circuit explained that the level of written description required to show possession of a claimed invention “varies...more

Akin Gump Strauss Hauer & Feld LLP

Federal Circuit Clarifies Burden of Proof on Challenges to Identification of Real Parties-in-Interest in IPR Proceedings

Akin Gump Strauss Hauer & Feld LLP on

In Worlds Inc. v. Bungie, Inc., the Federal Circuit remanded an appeal from an inter partes review (“IPR”) instructing the Patent Trial and Appeal Board (“Board”) to reweigh the evidence in a manner that placed the ultimate...more

Hogan Lovells

Federal Circuit Shifts Burden of Proof for Amendments in Post-Grant Proceedings

Hogan Lovells on

On October 4, 2017, the Federal Circuit, sitting en banc, issued a ruling in Aqua Products, Inc. v. Matal, placing the burden of persuasion on the petitioner to prove the invalidity of amended claims in post-grant...more

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