An alleged conflict of interest could cost Pillsbury Winthrop Shaw Pittman its role in a long-running bankruptcy case — and more than $4 million in fees.

A San Jose, Calif., bankruptcy judge has scheduled a March 19 hearing on a motion by the U.S. Trustee’s office to disqualify the firm and disgorge the fees it has racked up representing SonicBlue since the electronics maker went belly-up four years ago.