O’Shea Partners, a boutique that disbanded when its lawyers joined Boies Schiller Flexner and then Cadwalader Wickersham & Taft, has been sued by its former client, Madison Equities, for allegedly “fraudulently” padding its legal bills.

The allegations come amid a long-running dispute between O’Shea Partners and Madison Equities, a real estate development company. O’Shea Partners sued Madison Equities in 2016, alleging Madison owed hundreds of thousands of dollars in legal fees. Madison and its principal, Robert Gladstone, have sought a declaration that they owe nothing, plus another $600,000 in refunds.