We’re previously noted the activities of ArrivalStar and related entities, which have filed numerous suits against enterprises over alleged infringement on vehicle-tracking technology. Now one of its frequent targets, public transit systems, is striking back: the “American Public Transportation Association (APTA) has teamed up with the Public Patent Foundation (PubPat) … [and] have sued to knock out the ArrivalStar patents.” [Joe Mullin, Ars Technica] Also: “F.T.C. Is Said to Plan Inquiry of Frivolous Patent Lawsuits” [New York Times]

Filed under: Federal Trade Commission, patent trolls, transit