Revolution Medicines threatens to sue Erasca over patent, efficacy claims

April 27, 2026 02:17 PM EDT R&DChinaLaw Rev­o­lu­tion Med­i­cines threat­ens to sue Eras­ca in show­down over close­ly watched RAS drugs Max Bayer Senior Reporter Ear­li­er this month, a new can­cer drug cap­ti­vat­ed pa­tients and in­vestors. Now the lawyers get their turn. On Mon­day, the biotech Eras­ca said it had … Sign up to read this article for free. Get free access to a limited number of articles, plus choose newsletters to get straight to your inbox. SIGN UP LOG IN BECOME A PREMIUM SUBSCRIBER