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Claim Construction Prosecution History Estoppel United States Patent and Trademark Office

Womble Bond Dickinson

Reminder: “Consisting essentially of” Is U.S. Patent Claim Language Needing Interpretation

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On June 30, 2025, the Federal Circuit issued a precedential opinion in Eye Therapies v. Slayback Pharma in which the court interpreted the transition phrase “consisting essentially of” to be a closed term excluding other...more

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

The Goods on IP - October 2019: Curver Luxembourg v. Home Expressions: Words Can Matter in a Design Patent

Claim construction for a design patent is mainly focused on the drawings, which show the ornamental design that is protected by the patent. But the Federal Circuit recently identified one situation where the drawings weren’t...more

Jones Day

ITC Rejects Sofa Design Patent Infringement On Prosecution History Estoppel Grounds

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While design patents follow many of the same rules as utility patents, the application of those rules in determining design patent infringement can be less than straightforward. But a recent Initial Determination by ALJ...more

Knobbe Martens

Federal Circuit Review - June 2019

Knobbe Martens on

One-year Clock for Filing IPR Petition Applies to Litigants and Parties that Become Privies of the Litigant Prior to Institution. In Power Integrations, Inc v. Semiconductor Components, Appeal No. 2018-1607, the Federal...more

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