Japan IP High Court Clarified Scope of Patent Term Extension and Awarded Highest Ever Damages in Landmark Nalfurafine Case
On May 27, 2025, the Intellectual Property High Court of Japan ruled in favor of Toray Industries, Inc. in a landmark patent infringement lawsuit (Case No. 2021 (Ne) 10037) concerning the extended patent rights for the antipruritic agent “Remitch®” (nalfurafine). The court ordered two generic companies, Sawai Pharmaceutical Co., Ltd. and Fuso Pharmaceutical Industries, Ltd.,…