Sharpe Innovations Inc. has filed suit against retailers Best Buy (1:20-cv-00178) and Target (1:20-cv-00110) in the Western District of Texas, as well as against Tucows (1:20-cv-00166) in the District of Delaware. The new cases join active 2020 defendant Verizon (Visible Service), which was sued in mid-January in the District of Colorado. Each complaint has seen two patents generally related to a SIM card adapter that allows use of a smaller-format SIM card in a device that uses a larger-format SIM card (where the adapter body has a cut-out region “defined by walls” and that has a floor, with that region shaped to fit a micro SIM). At issue in the campaign, which began in June 2017, has been the provision of certain cellular SIM cards—here, Best Buy over SIM cards from Consumer Cellular, Target over FreedomPop SIM card kits, and Tucows over its own starter kit.