A retired attorney’s long-running fight with the Bank of New York and a White Plains, N.Y., law firm over her parents’ estate gave a federal appeals court the chance to explore the new standard on the probate exception to federal diversity jurisdiction.

The 2nd U.S. Circuit Court of Appeals said a 2006 U.S. Supreme Court decision changed the scope of the exception and the circuit’s own case law, with the result that some of the claims brought by Adrienne Marsh Lefkowitz against the bank and McCarthy, Fingar, Donovan, Drazen & Smith can stay in federal court.