Mayer Brown’s US and UK partnerships have both filed motions to dismiss the $245m (£119.4m) lawsuit relating to the firm’s advice on the 2005 collapse of futures broker Refco.

The motion – which relates to the claim made by a former creditor of Refco, Thomas H Lee Partners, in the summer – will be decided by a judge in New York in the new year. Mayer Brown is also considering its position on other Refco disputes, including a $2bn (£975m) claim filed in August by Refco trustee Marc Kirschner against a number of the company’s advisers.