Douglas Wentzel

Douglas Wentzel

Knobbe Martens

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Sunkist Squeezes Out a Win and Kisses Kist Goodbye!

SUNKIST GROWERS, INC. v. INTRASTATE DISTRIBUTORS, INC. - Before Prost, Taranto, and Stark.  Appeal from the Trademark Trial and Appeal Board. The TTAB incorrectly found that similar trademarks created distinct commercial...more

8/14/2025  /  CAFC , DuPont Factors , Lanham Act , Likelihood of Confusion , Trademark Application , Trademark Litigation , Trademark Opposition Proceedings , Trademark Registration , Trademark Trial and Appeal Board , Trademarks

Patent Claims Applying Machine Learning Methods to New Environment Do Not Withstand § 101 Scrutiny

RECENTIVE ANALYTICS, INC. v. FOX CORP. - Before Dyk, Prost, and Goldberg. Appeal from the United States District Court for the District of Delaware. The Federal Circuit found that claims applying established methods of...more

6/26/2025  /  Algorithms , Alice/Mayo , Appeals , CAFC , Machine Learning , Patent Infringement , Patent Litigation , Patent-Eligible Subject Matter , Patents , Section 101

Equitable Estoppel: Misleading Silence Not Enough Unless It Was Relied on and Caused Prejudice

FRAUNHOFER-GESELLSCHAFT v. SIRIUS XM RADIO INC. - Before Lourie, Dyk, and Reyna. Appeal from the United States District Court for the District of Delaware. The defense of equitable estoppel requires showing that the...more

6/25/2025  /  Appeals , CAFC , Equitable Estoppel , Patent Infringement , Patent Litigation
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