William John O'Brien Jr.
as of 6/20/2026 3:28:24 AM
William John O'Brien Jr.
1829 Oak Street Bldg 14-Apartment 1406
North Aurora, Illinois 60542-1918
(630) 567-0661
wobrien2@gmail.com
Date Admitted
December 30, 2014
Illinois Registration Status
Active and authorized to practice law
Malpractice Insurance
In annual registration, the attorney reported that the attorney, or the attorney’s firm, does not maintain malpractice insurance. (Some attorneys, such as judges, government lawyers, and in-house corporate lawyers, may not carry coverage due to the nature of their practice setting.)