Mealey's (December 4, 2019, 12:17 PM EST) -- CINCINNATI — The Sixth Circuit U.S. Court of Appeals on Nov. 8 granted a defendants’ petition for interlocutory appeal of certification of a negotiation class in the opioid multidistrict litigation (In Re: McKesson Corporation, et al., No. 19-305, 6th Cir., 2019 U.S. App. LEXIS 33631)....