Santa Ana-based CoreLogic, the Orange County provider of real estate, mortgage, and other related databases and information services, has sued Internet real estate broker Redfin, over patents related to home price valuation. CoreLogic's lawsuit says that Redfin is infringing on its patent, U.S. Patent No. 5,361,201, covering real estate appraisal using predictive modeling. The lawsuit, CoreLogic Solutions, LLC v. Redfin Corporation, was filed last night in the Texas Eastern District Court, a popular location for patent infringement lawsuits. The suit was first noted by Geekwire. Redfin is based in Seattle.