Soverain IP LLC has expanded the litigation campaign that it began roughly one month ago with suits against Apple and Microsoft by adding new cases against AT&T (2:17-cv-00293), CenturyLink (2:17-cv-00289), Charter Communications (2:17-cv-00301), Datapipe (2:17-cv-00292), Episerver (2:17-cv-00291), Kohl’s (2:17-cv-00320), SDL (2:17-cv-00294), Staples (2:17-cv-00311), Target (2:17-cv-00307), and Wal-Mart (2:17-cv-00306). The NPE has asserted six patents (5,708,780; 6,212,634; 6,279,112; 7,191,447; 8,606,900; 8,935,706) in the campaign, with all of them in suit against Microsoft only. The patents generally relate to various aspects of network communications, Soverain IP identifying a long list of accused products, including various features of online communications products and protocols (e.g. permitting content download, issuing certificates as a part of secure communications, using proxy servers, etc.).