James John Antonopoulos
as of 6/20/2026 3:10:39 AM
James John Antonopoulos
Mayer Brown LLP
71 South Wacker Drive Suite #2400
Chicago, Illinois 60606
(312) 701-8019
jantonopoulos@mayerbrown.com
Date Admitted
November 06, 2003
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.