The government said it expects the trial of Dewey & LeBoeuf’s former leaders to take more than four months, and that one likely witness is John Altorelli, a former Dewey executive committee member who is now a partner at DLA Piper.

Prosecutors from the office of Manhattan District Attorney Cyrus Vance Jr. and defense counsel returned Monday to the courtroom of Supreme Court Justice Robert Stolz ( See Profile) to discuss discovery and trial schedule.