These first filers were Teva Pharmaceutical Industries, Ltd. and Teva Pharmaceuticals USA, Inc. (Teva); Ranbaxy Laboratories, Ltd. and Ranbaxy Pharmaceuticals, Inc. (Ranbaxy); Mylan Pharmaceuticals, Inc. and Mylan Laboratories, Inc. (Mylan), and Barr Laboratories, Inc. (Barr). Cephalon sued these generic defendants for patent infringement on March 28, 2003. From 2005 to 2006, Cephalon entered into four reverse-payment settlements with the four generic defendants. The settlements allowed the generic defendants to launch their generic Provigil product on April 6, 2012, prior to the expiration of the RE'516 patent. Cephalon agreed to pay the generic defendants a total of approximately $300 million. Plaintiffs filed antitrust class actions against Cephalon and the generic defendants beginning 2006, which were consolidated as In re Modafinil Litigation.