Costco (2:24-cv-00546), Kroger (2:24-cv-00548), Shell (Equilion Enterprises, Shell Information Technology International) (2:24-cv-00549), Starbucks (2:24-cv-00550), Volkswagen (2:24-cv-00575) and Walmart (2:24-cv-00551) are the latest defendants to be sued in the August 2020 litigation campaign launched by inventor-backed RFCyber Corp. In the new Eastern District of Texas complaints, the plaintiff asserts three patents, in overlapping sets, generally related to contactless financial transactions with a mobile device over a network. The defendants are accused of infringement over the support for contactless payment functionalities in their various products; for Volkswagen, over its automobiles (and related software); and for the remaining defendants, over their respective mobile apps.