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Federal Circuit Affirms ‘pH 13 or Higher’ Means ‘pH 12.98 or Higher’ in Actelion v. Mylan: Generic Epoprostenol Cleared of Infringement

The Federal Circuit on May 13, 2026 affirmed Mylan's generic epoprostenol does not infringe Actelion's Veletri patents, holding 'pH of 13 or higher' means 'pH 12.98 or higher' and foreclosing the doctrine of equivalents under both prosecution history estoppel and the disclosure-dedication rule.

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VLSI Scores Partial Reversal Against Intel at Federal Circuit: Court Clarifies Binding Effect of Extraterritoriality Stipulations and Scope of Prosecution History Estoppel

The U.S. Court of Appeals for the Federal Circuit issued a precedential opinion on April 14, 2026, reversing in part the...

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Federal Circuit Confirms Prosecution Statements Permanently Limit Patent Claim Scope—Puradigm Decision

The U.S. Court of Appeals for the Federal Circuit held on April 1, 2026, in Puradigm, LLC v. DBG Group Investments LLC, ...

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