Atty. Mark Robert O'Leary

Atty. Mark Robert O'Leary

Mr. Mark Robert O'Leary is a lawyer.

Chicago Chicago 44 yrs experience 44 year
Call (224) 801-5578 Book Appointment

Profile Summary

About Mark Robert O'Leary at a glance

Mark Robert O'Leary is an attorney based in Chicago, Illinois. They have 44+ years of legal experience, licensed to practice since 1982. Admitted to practice in New Jersey (1982), District of Columbia (1985), Connecticut (2008), and Illinois (2015). Serands clients in Chicago, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mr. Mark Robert O'Leary is a lawyer
  • Mark has been licensed for 44 years
  • Mark practices in Chicago, IL

Jurisdictional Context

Why local counsel matters in Illinois

Practicing law in Illinois. Legal matters in Illinois are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Chicago are typically filed in the local municipal court or the appropriate Illinois state district court, depending on subject matter and amount in controversy. An attorney licensed in Illinois brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Illinois courts without local counsel or pro hac vice admission.

Looking for additional Illinois attorneys? Browse all attorneys in Chicago or all attorneys in Illinois.

Frequently Asked

Common questions about Mark Robert O'Leary

Where is Mark Robert O'Leary's law office located?
Mark Robert O'Leary's law practice is located in Chicago, Illinois. You can contact the office directly through this profile page.
How long has Mark Robert O'Leary practiced law?
Mark Robert O'Leary has 44+ years of legal experience and has been licensed since 1982.
How can I contact Mark Robert O'Leary for a consultation?
You can contact Mark Robert O'Leary directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.

Bar Admissions

New Jersey
Admitted: 1982
District of Columbia
Admitted: 1985
Connecticut
Admitted: 2008
Illinois
Admitted: 2015

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