(June 16, 2020, 4:49 PM EDT) -- WASHINGTON, D.C. — The District of Columbia Circuit U.S. Court of Appeals on June 15 denied an emergency motion blocking a Medicare drug rebate calculation for Acthar Gel, a move that defendant Mallinckrodt ARD LLC said resulted in an immediate $650 million charge for back rebates and that puts the company’s opioid settlement in danger (Mallinckrodt ARD LLC, et al. v. Seema Verma, et al., No. 19-1471, D.C. Cir.)....