Walter J. O'Brien

Practice Areas

  • Estate Planning
  • Real Estate
  • Business Law



Mr. O'Brien has devoted his legal career to estate planning and administration, real estate, and business law matters. His extensive experience includes representing a trust department at a major Chicago bank and handling estate matters for clients of significant wealth. He currently is Chairman of the Board of Directors of ATG Trust Company. Mr. O'Brien also serves on the board and is a past Chairman of the Board of Directors of Attorneys' Title Guaranty Fund, Inc., where he has served on and chaired several committees and is an active shareholder member.

His professional and civic activities include past and present service with several bar, charitable, educational and civic organizations.


  • Northwestern University School of Law, Chicago, Illinois
    • J.D.
  • University of Notre Dame, Notre Dame, Indiana
    • B.B.A.

Bar Admissions

  • Illinois, 1965
  • U.S. Federal Courts, 1967
  • U.S. Supreme Court, 1973

Fraternities or Sororities

  • Phi Alpha Delta