Mealey's ( September 3, 2026, 3:04 PM EDT) -- PITTSBURGH — An oil and gas producer sued by a class of leaseholders seeking allegedly unpaid royalties didn’t abandon its arbitration rights related to unnamed class members when it waited until after class certification to move to compel arbitration against those with arbitration clauses in their leases, a Third Circuit U.S. Court of Appeals ruled in an interlocutory appeal, vacating the trial court’s ruling and remanding....