Walker Digital, an enforcement entity controlled by IP Nav, filed three new suits against PayNearMe, Amazon and 7-Eleven collectively, and Wal-Mart and Toys “R” Us. PayNearMe is a cash transaction network and the other named defendants are companies who accept mobile cash payments. In all three suits, Walker Digital alleges infringement of a patent related to a remote payment processing system (6,381,582). Since 2009, Walker Digital has filed over 30 patent infringement lawsuits against more than 150 companies, including Microsoft, HP, Apple, and Dell.  A prior suit against Apple and Groupon was settled with Walker Digital for $25 million in July 2011. Jay S. Walker, chairman of Walker Digital and founder of Priceline.com, is the inventor of the patent-in-suit. Walker Digital has over 450 issued and pending U.S. and international patents. 1/16, District of Delaware, 1:13cv00096, 1:13cv00097, 1:13cv00098.