The U.S. District Court for the District of Delaware has rendered a decision in the patent litigation between Alza Corporation, McNeil-PPC, Inc. and Andrx Pharmaceuticals LLC. McNeil Pediatrics, Division of Ortho-McNeil-Janssen Pharmaceuticals, Inc., which markets Concerta (methylphenidate HCI) Extended-Release Tablets CII, said the court held that the patent in suit is not valid or infringed by the filing of Andrx's Abbreviated New Drug Application.