CoStar files suit against Xceligent, its biggest rival

Commercial real estate data company CoStar Group is suing its biggest rival Xceligent for copyright infringement, in a near mirror image of its previous lawsuits against data startups RealMassive, LoopNet and against users of CompStak. In a complaint filed Tuesday in Kansas City, Missouri federal court, CoStar accused Xceligent of “piracy” and “copyright infringement on […]