Mealey's (June 16, 2015, 1:58 PM EDT) -- NEW ORLEANS — A unanimous Fifth Circuit U.S. Court of Appeals panel ruled May 7, 2014, that an Eastern District of Texas judge lacked jurisdiction over an assignment of rights dispute among natural gas well operating companies because a nondiverse intervenor destroyed subject-matter jurisdiction; the panel vacated a summary judgment order and remanded the lawsuit with instructions to determine if the intervenor is an indispensable party (Chesapeake Louisiana v. Buffco Production Inc., et al., No. 13-40458, 5th Cir.)....