WILMINGTON: The Gillette Company is suing online razor supplier Dollar Shave Club (DSC) in federal court for patent infringement. The lawsuit filed on Thursday in US District Court in Delaware claims that Dollar Shave Club is selling products that infringe on patented technology, including a blade coating used on Gillette products such as the Mach3, Venus and Fusion razors. Boston-based Gillette, a subsidiary of Procter and Gamble, says it owns all rights, title and interest in the patent. A spokeswoman for DSC, based in Venice, California, said the company has no comment at this time. Gillette says the offending products being sold by DSC are marketed under the names The Humble Twin, The 4X, and The Executive.