The ruling effectively shuts down dozens of the lawsuits Soverain filed last year against Nordstrom’s, Macy’s, Home Depot, Radioshack, Kohl’s, and many others. All of them did nothing more than provide shoppers with basic online checkout technology. Soverain used two patents, numbers 5,715,314 and 5,909,492, to claim ownership of the “shopping carts” commonly used in online stores. In some cases, it wielded a third patent, No. 7,272,639.