Judge Duffy was appointed to the bench in April 2014 and is presently assigned to the First Municipal District, Non-Jury Civil Section.

Prior to his appointment to the bench, Duffy practiced law for nearly twenty years, appearing in both state and federal court. In addition, from 2004 until 2013, Duffy served by appointment of the Illinois Supreme Court on the nine-member Review Board of the Attorney Registration and Disciplinary Commission, hearing appeals of disciplinary hearings as part of a three-member panel.

Judge Duffy resides in Chicago with his wife and two children, 7 and 9.