CoStar files lawsuits from D.C. to California alleging widespread unauthorized use

CoStar Group Inc. filed federal lawsuits from D.C. to California Wednesday against people or companies for the widespread unauthorized use of its subscription-based commercial real estate data.It's hardly the first time D.C.-based data giant has sued to protect its property information and images, and it comes nearly a year after one of its targets, Xceligent, filed for bankruptcy. None of the defendants are based in Greater Washington, and only one of the lawsuits was filed locally. In all, the