William Joseph Allen
as of 6/18/2026 3:12:04 AM
William Joseph Allen
Banner & Witcoff
71 South Wacker Suite 3600
Chicago, Illinois 60606-4610
(312) 463-5000
allenwj1@outlook.com
Date Admitted
November 07, 2002
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, maintains malpractice insurance.