T-Rex Property AB has filed suit against another two defendants, capping off the May escalation of a litigation campaign that has targeted over 60 companies since its start in June 2012. The Swedish NPE’s latest complaints target Adaptive Micro Systems (1:16-cv-05667) and Health Media Network (1:16-cv-05673) and were filed in the wake of five previous lawsuits lodged in the first half of May. The two complaints each allege infringement of three patents that have been asserted in various combinations over the course of the entity’s campaign: two that generally relate to the real-time display of information on public billboards (RE39,470; 7,382,334) and one that relates to advertising on them (6,430,603). As in its previous filings, the NPE’s most recent lawsuits target devices and systems related to digital billboards and advertising.

T-Rex Property AB has added two more Texas suits to the litigation campaign that it began in June 2012, one against Zipcast (4:15-cv-03170) and one against Muzak, DMX, and MOOD Media (1:15-cv-00980). Three patents are asserted in the campaign (RE39,470, 7,382,334, 6,430,603); the first two relate generally to the real-time display of information on public billboards, while the ‘603 patent relates to advertising on them. The defendants’ electronic billboards are accused of infringement.

For the first half of February 2015, RPX saw nineteen transfers of patents to NPEs recorded with the USPTO.