A lawsuit accusing multibillionaire hedge fund founder Steven A. Cohen of hiding assets in a 1990 divorce was reinstated yesterday—the latest chapter in a long-running legal battle with his ex-wife. In 2011, then-Southern District Judge Richard Holwell had thrown out Patricia Cohen’s suit, saying its fraud allegations were too old and unsubstantiated to go forward. Her husband’s lawyers had accused her of filing it merely "to harass and generate media attention against Mr. Cohen" nearly 20 years after the couple split during his rise to become one of the richest men in America.

But the U.S. Court of Appeals for the Second Circuit concluded in Cohen v. Cohen, 11-1390-cv, that "there was no basis to dismiss Patricia’s fraud-based claims as untimely" since she had only uncovered evidence to back them up in 2008. The couple divorced in 1990. He remarried in 1992 and launched SAC Capital with $25 million in assets.