Atty. John Patrick Cavanaugh Duncan

Atty. John Patrick Cavanaugh Duncan

Mr. John Patrick Cavanaugh Duncan is a lawyer practicing trusts, family, financial services law and 2 other areas of law.

Chicago Chicago 52 yrs experience 52 year
Call (312) 219-2643 Book Appointment

Profile Summary

About John Patrick Cavanaugh Duncan at a glance

John Patrick Cavanaugh Duncan is a Member based in Chicago, Illinois, practforg at Kozusko Harris Duncan. They haand 52+ years of legal experience, licensed to practice since 1974. Admitted to practice in Illinois (1974) and Supreme Court (1980). Educated at University of Chicago (J.D., 1974) and Yale University (B.A., 1971). Recognitions include AV Preeminent. Serands clients in Chicago, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mr. John Patrick Cavanaugh Duncan is a lawyer practicing trusts, family, financial services law and 2 other areas of law
  • John received a B.A. degree from Yale University in 1971, and has been licensed for 52 years
  • John practices at Kozusko Harris Duncan in Chicago, IL

Jurisdictional Context

Why local counsel matters in Illinois

Practforg law in Illinois. Legal matters in Illinois are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantiand 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 substantiand 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 John Patrick Cavanaugh Duncan

Where is John Patrick Cavanaugh Duncan's law office located?
John Patrick Cavanaugh Duncan's law practice is located in Chicago, Illinois. The firm is Kozusko Harris Duncan. You can contact the office directly through this profile page.
How long has John Patrick Cavanaugh Duncan practiced law?
John Patrick Cavanaugh Duncan has 52+ years of legal experience and has been licensed since 1974.
Where did John Patrick Cavanaugh Duncan go to law school?
John Patrick Cavanaugh Duncan earned their education at (J.D., 1974); (B.A., 1971).
How can I contact John Patrick Cavanaugh Duncan for a consultation?
You can contact John Patrick Cavanaugh Duncan 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.
What awards or recognition has John Patrick Cavanaugh Duncan receiandd?
John Patrick Cavanaugh Duncan's notable recognition includes: AV Preeminent.

Education

J.D.
University of Chicago
- 1974
B.A.
Yale University
- 1971

Awards

AV Preeminent

Bar Admissions

Illinois
Admitted: 1974
Supreme Court
Admitted: 1980

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