(Bloomberg) -- Erin Ranahan, a partner at Winston & Strawn and the attorney representing Axanar Productions, and Michael Risch, a professor at Villanova University Law School, discuss a California judge's ruling that Axanar cannot claim fair use as a defense in the Paramount and CBS copyright lawsuit over a fan-made prequel to the "Star Trek" series. They speak with June Grasso on Bloomberg Radio's "Bloomberg Law."