Tag: preclusion
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Eye Therapies, LLC v. Slayback Pharma, LLC: “Consisting Essentially Of” Precludes Other Active Ingredients
In a significant reversal for the U.S. Patent and Trademark Office’s Patent Trial and Appeal Board (PTAB), in Eye Therapies, LLC v. Slayback Pharma, LLC the Federal Circuit on June 30, 2025, held that the Board erred in its construction of the transitional claim phrase “consisting essentially of” as used in Eye Therapies, LLC’s U.S.…
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WARF v. Apple: A Cautionary Tale of Waiver and Preclusion
In its August 28, 2024 opinion in Wisconsin Alumni Research Foundation v. Apple Inc., the Federal Circuit issued a decisive ruling affirming two final judgments in favor of Apple, closing the door on WARF’s decade-long effort to assert U.S. Patent No. 5,781,752 across successive generations of Apple processors. The decision underscores the high stakes of…