On October 28, 2011, the U.S. District Court for the District of Massachusetts granted plaintiffs Momenta Pharmaceuticals, Inc. and Sandoz Inc.'s motion for preliminary injunction against defendants Amphastar Pharmaceuticals, Inc., International Medication Systems, Ltd., and Watson Pharmaceuticals, Inc. See Momenta Pharmaceuticals, Inc., et al. v. Amphastar Pharmaceuticals, Inc., et al., No. 1:11-cv-11681-NMG (D. Mass. Oct. 28, 2011) ("Momenta Opinion").