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Burden of Proof Patent Ownership Patent Litigation

Knobbe Martens

Collateral Estoppel Does Not Apply When the Prior Proceeding Applies a Lower Burden of Proof

Knobbe Martens on

Because there are different burdens of proof in IPRs and district court, collateral estoppel does not preclude a patent owner from asserting claims that are immaterially different from claims canceled in an IPR....more

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

2023 PTAB Year in Review: Analysis & Trends: 2023 PTAB Case Highlights

Precedential Decisions - Penumbra, Inc. v. RapidPulse, Inc., IPR2021-01466, Paper 34 (March 10, 2023) (designated: November 15, 2023) (regarding prior art status under AIA § 102) The Director designated as precedential...more

Fitch, Even, Tabin & Flannery LLP

Federal Circuit Addresses Burden of Proof for IPR Estoppel

On April 3, in Ironburg Inventions Ltd. v. Valve Corp., the Federal Circuit articulated a standard for applying inter partes review (IPR) estoppel on grounds a petitioner “reasonably could have raised” under 35 U.S.C. §...more

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

2019 Report: Federal Circuit Appeals from the PTAB - Summaries of Key 2018 Decisions

In 2018, the U.S. Court of Appeals for the Federal Circuit docketed close to 600 appeals from the U.S. Patent and Trademark Office (USPTO). That is the second highest number since starting to hear post-American Invents Act...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

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

Jones Day

PTAB Requires Identification of Structure for Function for Means-Plus-Function Terms

Jones Day on

In a decision dated August 17, 2017, the Board denied institution of Kingston Technology Company, Inc.’s petition requesting inter partes review of claims 1-3, 6-8, 11-15, 23-28, and 36-39 of U.S. Patent No. 6,088,802 (“the...more

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