U.S. heavyweight Latham & Watkins and transatlantic firm Bryan Cave Leighton Paisner have taken roles on a litigation battle involving British multimillionaire siblings Amit and Meeta Patel.

Claims made in court documents filed earlier this month argue the duo “misrepresented the financial circumstances” of pharmaceutical business Auden McKenzie Pharma prior to its £306 million ($389.1 million) sale in 2015 to pharma giant Actavis Holdings UK.