(April 16, 2020, 1:59 PM EDT) -- CINCINNATI — The Sixth Circuit U.S. Court of Appeals on April 15 granted a writ of mandamus to seven pharmacy chains in the opioid multidistrict litigation, ruling that the MDL judge erred in allowing two counties to file amended claims against them long after deadlines had passed (In Re: National Prescription Opiate Litigation [In Re: CVS Pharmacy, Inc., et al.], No. 20-3075, 6th Cir., 2020 U.S. App. LEXIS 11923)....