Mealey's (September 28, 2018, 11:40 AM EDT) -- WASHINGTON, D.C. — A patent infringement defendant recently told the Federal Circuit U.S. Court of Appeals that a West Virginia federal judge failed to filter out the functional features of a design patent covering a rock dust blower before submitting the matter to jurors (Hafco Foundry and Machine Co. v. GMS Mine Repair and Maintenance Inc., No. 18-1904, Fed. Cir.)....