Uniloc USA, Inc. and Uniloc Luxembourg S.A. have continued their spring filing spree with the start of a new campaign, asserting various combinations of five patents generally related to group voice messaging against eight defendants, including Apple (2:16-cv-00638), BlackBerry (2:16-cv-00639), Facebook (WhatsApp) (2:16-cv-00645), and Samsung (2:16-cv-00642). Each defendant is accused of infringement through their respective smartphone messaging apps. While Uniloc pleads that it is both the exclusive licensee and the owner by assignment of all asserted patents, the patents’ most recent recorded assignee is the prolific patent monetization firm Empire IP LLC.