(March 15, 2016, 10:38 AM EDT) -- ST. PAUL, Minn. — Parties in a securities class action lawsuit recently asked the Eighth Circuit U.S. Court of Appeals to determine whether a federal district court erred in granting summary judgment on the basis that shareholders’ federal securities law claims were barred under the two-year “discovery” statute of limitations even though the evidence was not available to the shareholders until much later (West Virginia Pipe Trades Health & Welfare Fund, et al. v. Medtronic Inc., et al., No. 15-3468, 8th Cir.)....