Consolidated Transaction Processing LLC (CTP) has added more suits to its sole litigation campaign, which it resuscitated with a case filed against Wayfair last May in the Eastern District of Texas. This time the plaintiff has sued Amazon (1:19-cv-00518), eBay (1:19-cv-00519), Overstock.com (1:19-cv-00520), and Wal-Mart (1:19-cv-00521) in Delaware, asserting the same five e-commerce patents. At issue are a variety of common features in the defendants’ e-commerce platforms, including customer data retention and management, data management for products offered for sale and user reviews, purchase recommendations, user interface controls for immediate purchase or checkout, payment processing and the related use of customer data for shipment and billing info, order management, and related user notifications. Additionally, CTP targets features of those platforms that distinguish between multiple sellers for a given item and that allow sellers to choose from multiple payment processors.