(October 20, 2016, 12:36 PM EDT) -- HOUSTON — In a trademark infringement lawsuit, an expert may testify on branding in the fitness industry but is not allowed to discuss whether an alleged brand meets various legal definitions related to trademark law, a Texas federal judge ruled Oct. 18, also denying summary judgment to a fitness training company on its fair use defense (Michael Jones v. American Council on Exercise, No. 15-3270, S.D. Texas; 2016 U.S. Dist. LEXIS 143882)....