RC2 Sues Munchkin, Inc For "Sippy Cup" Patent Infringement

RC2 Sues Munchkin, Inc For "Sippy Cup" Patent Infringement

RC2, whom you probably know as the company that makes the lead-tainted Thomas & Friends toys, has filed a lawsuit against rival Munchkin, INC for allegedly infringing on a spill-proof sippy cup patent.