IP News 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.