The securities litigation law firm of Brower Piven, A Professional Corporation, has commenced an investigation into possible breaches of fiduciary duty to current shareholders of Questcor Pharmaceuticals Inc. (“Questcor” or the “Company”) (Nasdaq: QCOR) and other violations of state law by the board of directors of Questcor relating to the proposed buyout of the Company by Mallinckrodt plc (“Mallinckrodt”). Under the terms of the transaction, Questcor shareholders will receive $30.00 cash and 0.897 Mallinckrodt shares for each share of Questcor common stock they own. The firm’s investigation seeks to determine, among other things, whether the Company’s board of directors breached their fiduciary duties by failing to maximize shareholder value before agreeing to enter into this transaction, and whether Mallinckrodt is underpaying for Questcor shares. If you currently own common stock of Questcor and would like to learn more about the investigation being conducted by Brower Piven, without cost or obligation to you, click here: http://www.browerpiven.com/currentinvestigations.html. You may also request more information by contacting Brower Piven either by email at email@example.com or by telephone at (410) 415-6616. Attorneys at Brower Piven together have more than a century of experience litigating securities and other class action cases.