Yet compliance with federal law is no guarantee against a lawsuit. Copyright infringement of listing photographs is central in ongoing legal action between Illinois-based real estate photography company VHT and Zillow. According to the lawsuit, VHT retains ownership of its listing photographs and grants only nonexclusive licenses to brokers to use the photographs solely in connection with marketing active property listings. In the complaint, VHT alleges that Zillow used its photographs without authorization in connection with sold properties and on Zillow's home design website. The case is still pending.