Mealey's (February 27, 2018, 3:47 PM EST) -- WASHINGTON, D.C. — An Illinois federal judge erred in finding that a fourth amended complaint (4AC) for direct patent infringement of a method for enhanced mercury control in coal-fired power plants failed to state a claim upon which relief could be granted, the Federal Circuit U.S. Court of Appeals ruled Feb. 26, reinstating the case (Nalco Company v. Chem-Mod LLC, et al., No. 17-1036, Fed. Cir.)....