Seiko Epson Corporation, Epson America, and Epson Portland (collectively Epson) have filed a new patent-infringement lawsuit in the U.S. District Court for the Middle District of North Carolina against four companies—BCH Technologies LLC, Max Mart LLC, Zhuhai Du Fu E-Commerce Co. Ltd., and Zhuhai Xiaohui E-Commerce Co. Ltd.—and two individuals—Kevin William Day, aka Wenjing Dai,
