Acceleration Bay LLC has sued Activision Blizzard Inc. claiming that two of the company's biggest franchises violate six of the patents it holds (Civil Action No. 1:15-cv-00228-UNA). We do not have access to the filings or exhibits as of this writing. Acceleration Bay appears to a patent holding company and does not produce any products or services with these patents, according to what we found on its web site. Activision Blizzard has not issued a public statement about the case.