8680591

Patent record lists this as the sole litigation entry for US 7,442,629, but the accessible court records indicate the patents asserted were US 8,680,591, US 8,080,467, and initially US 7,884,446, a divisional of US 7,442,629. A May 2019 jury found willful infringement of the '467 patent and breach of the parties' NDA; the September 24, 2019 judgment granted SiOnyx ownership of disputed Hamamatsu patents and a permanent injunction, and the related appeal closed on 2021-05-18.

Hamamatsu Corporation petitioned for inter partes review of U.S. 8,680,591, challenging claims 1–26. The Board instituted on March 30, 2017 and issued a Final Written Decision on March 28, 2018; the decision was appealed and affirmed.

SiOnyx appealed the PTAB’s Final Written Decision in IPR2016-01910 regarding U.S. 8,680,591. The Federal Circuit entered judgment on April 3, 2019, affirming the Board.

SiOnyx appealed the D. Mass. judgment in its case against Hamamatsu. The Federal Circuit affirmed the ownership award, injunctions, damages, and interest awards, but reversed the refusal to compel transfer of foreign patents and remanded.