Oil-Dri Corporation of America v. Nestle Purina Petcare Company

IN THE UNITED STATES DISTRICT COURT FOR THE NORTHERN DISTRICT OF ILLINOIS EASTERN DIVISION OIL-DRI CORPORATION OF AMERICA, ) ) Plaintiff, ) ) vs. ) Case No. 15 C 1067 ) NESTLÉ PURINA PETCARE COMPANY, ) ) Defendant. ) MEMORANDUM OPINION AND ORDER MATTHEW F. KENNELLY, District Judge: In February 2015, Oil-Dri Corporation sued Nestlé Purina Petcare Company for patent infringement. Both companies manufacture cat litter. Oil-Dri owns a patent for "clumping animal litter," which it alleges Nestlé Purina has infringed. Specifically, it alleges literal infringement of two of the patent's independent…