Peter O'Connor

Peter O'Connor

Wheaton, Illinois
1800-DIAL-DUI (Toll-Free)

As a criminal defense attorney at Ramsell and Associates, L.L.C. I have handled literally hundreds of DUIs and criminal offenses of all types. I have fought for my clients by going to trial, and I have negotiated serious charges down to low-level offenses. Prior to the firm, I clerked for the Homicide Task Force at Cook County Public Defender's Office and the DuPage County Public Defender's. I earned a J.D. from The John Marshall Law School, a M.A. from Purdue University Calumet, and a B.A. from The University of Illinois at Chicago. I also served in the U.S. Army for 4 years and in the National Guard for 6. I am currently a member in good standing of the Illinois State Bar Association, the DuPage Bar Association, the Cook County Bar Association, and the National College for DUI Defense.

Areas of Practice

  • 50% DUI
  • 50% Criminal Defense

Litigation Percentage

  • 100% of Practice Devoted to Litigation

Bar Admissions

  • Illinois, 2015
  • U.S. District Court Northern District of Illinois, 2015


  • John Marshall Law School, Chicago, Illinois
    • J.D. - 2015
  • University of Illinois, Chicago, Illinois
    • B.A. - 2009
    • Major: English
  • Purdue University Calumet
    • M.A.

Professional Associations and Memberships

  • Illinois State Bar Association, 2015 - 2016
  • DuPage County Criminal Defense Lawyer Association, 2016 - Present
  • DuPage County Bar Association

Past Employment Positions

  • The Semerad Law Firm, L.L.C., Associate Attorney, 2015 - 2016