Mary K. O'Brien
as of 6/18/2026 6:46:01 AM
Mary K. O'Brien
Justice of the Supreme Court of Illinois
Not available
Not available
Date Admitted
May 05, 1994
Illinois Registration Status
Judge
Active Status
Malpractice Insurance
Judges and magistrates are not required to report whether they carry malpractice insurance as they generally do not practice law.