SAN MARCOS, Calif., June 17, 2013 /PRNewswire/ -- Natural Alternatives International, Inc. (NAI) (NASDAQ: NAII), a leading formulator, manufacturer and marketer of customized nutritional supplements, announced today that it has sued Woodbolt Distribution, LLC, also known as Cellucor (Woodbolt), GNC Corporation (GNC), and Bodybuilding.com, LLC ( Bodybuilding.com) for patent infringement. The complaint, filed in U.S. District Court in Houston, Texas, alleges that Woodbolt's newly-introduced Neon Sport™ Volt™ product infringes two patents that are part of NAI's worldwide portfolio covering CarnoSyn® beta-alanine. NAI also asked the Court to preliminarily enjoin sales of Volt. NAI's complaint is based on two patents, U.S. Patent Nos. 8,067,381 ("the '381 patent") and 8,129,422 ("the '422 patent"), both entitled "Methods and compositions for increasing the anaerobic working capacity in tissues. "The complaint alleges that Woodbolt is marking the Neon Sport™ Volt™ product as "[a]n in your face, high energy pre-workout with unmatched doses of beta-alanine" and other ingredients, and that "Volt's signature ingredient is surely beta-alanine, and at max dose, Volt™ delivers, in many cases, more than 2x the amount of max dosed competing products." Mark A. LeDoux, NAI's CEO and Chairman of the Board, said that "NAI's suit alleges that Woodbolt decided to launch a blatantly infringing beta-alanine product, Volt™, as a pre-workout supplement containing high amounts of beta-alanine. The suit also alleges infringement by GNC and BodyBuilding.com for marketing and distributing the infringing product. The defendants are well aware of NAI's '381 and '422 patents." He went on to say that "NAI will continue to take steps to protect and defend its valuable intellectual property portfolio." NAI previously sued Woodbolt in the Southern District of Texas for infringement of the '381 and '422 patents on other Woodbolt products – C4 Extreme, M5 Extreme, N0 Extreme, BCAA and Cre. That case is pending. NAI is represented in the case by the Patton Boggs LLP and Bracewell & Guiliani law firms.