Mealey's (August 14, 2015, 11:31 AM EDT) -- WEST PALM BEACH, Fla. — Lead plaintiffs in a securities class action lawsuit on Aug. 7 appealed a federal district court’s ruling dismissing their federal securities law claims to the 11th Circuit U.S. Court of Appeals (Philip Henningsen v. The ADT Corp., et al., No. 14-80566, S.D. Fla.)....