The U.S. Court of Appeals for the Third Circuit is taking an interlocutory appeal on a question that it opened after declaring last June that GlaxoSmithKline is a corporate citizen of Delaware, not Pennsylvania.

Since that opinion, which effectively preserved GSK’s ability to remove to federal court cases filed against it in Pennsylvania state courts, district judges have been splitting on the issue of whether or not the pharmaceutical giant can re-remove cases to the district courts after those cases had been remanded to state court before the circuit court’s June decision.