Two ex-clients of Boies Schiller Flexner filed a lawsuit Thursday alleging that firm founder David Boies and D.C. partner Michael Underhill committed legal malpractice and breached fiduciary duties as counsel, among other allegations.

The lawsuit, filed in New Jersey by Telebrands Corp. and, alleges that repeated mistakes in IP litigation against competitors Tinnus Enterprises and Zuru Limited over a similar product resulted in a multimillion-dollar judgment against Telebrands and, and a subsequent confidential settlement with Tinnus.