A former corporate client that Kasowitz Benson Torres earlier sued for unpaid legal fees is fighting back with a malpractice lawsuit alleging billing fraud, claiming it didn't receive legal services “commensurate with a law firm that represents the president of the United States.”

Instead, the former client, insurance servicing company Patriot National Inc., said it was subjected to “fraudulent billings, malpractice and other egregious misconduct that has caused millions of dollars in damages.”

For instance, Patriot said one firm biller recorded 24 hours of work for the client in a single day, and the firm collectively billed its client “more than 83 hours to assemble binders.”