Boies Schiller Flexner has urged a Manhattan state court to uphold an arbitration ruling that awarded the firm more than $640,000 in a dispute over legal fees with a former client, the Chinese real estate tycoon Miles Kwok.

Boies Schiller filed a petition in New York Supreme Court on Nov. 21 looking to confirm a decision by New York-based JAMS arbitrator Frank Maas. On Oct. 6, Maas ordered Kwok, who is also known as Guo Wengui, to pay just under $627,000 in fees and interest to Boies Schiller, which had represented the Chinese businessman between May 2017 and December 2017 in five separate litigation matters. Maas also cleared Boies Schiller to apply an additional $500,000—the amount Kwok put up as a retainer when he hired the firm—to cover unpaid fees.