Atty. John J. Duepner, Jr.

Atty. John J. Duepner, Jr.

John J. Duepner, Jr. is a lawyer.

Clayton Clayton 41 yrs experience 41 year
Call (309) 718-8598 Book Appointment

Profile Summary

About John J. Duepner, Jr. at a glance

John J. Duepner, Jr. is an Asst. Pros. Atty. based in Clayton, Missouri. They have 41+ years of legal experience, licensed to practice since 1985. Admitted to practice in Missouri (1985) and Illinois (1985). Educated at St. Louis University (J.D., 1985) and University of Missouri-Columbia (B.A. University, 1971). Recognitions include AV Preeminent. Serands clients in Clayton, MO and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • John J. Duepner, Jr. is a lawyer
  • John J. received a B.A. degree from University of Missouri-Columbia in 1971, and has been licensed for 41 years
  • John J. practices in Clayton, MO

Jurisdictional Context

Why local counsel matters in Missouri

Practicing law in Missouri. Legal matters in Missouri are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Clayton are typically filed in the local municipal court or the appropriate Missouri state district court, depending on subject matter and amount in controversy. An attorney licensed in Missouri 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 Missouri courts without local counsel or pro hac vice admission.

Looking for additional Missouri attorneys? Browse all attorneys in Clayton or all attorneys in Missouri.

Frequently Asked

Common questions about John J. Duepner, Jr.

Where is John J. Duepner, Jr.'s law office located?
John J. Duepner, Jr.'s law practice is located in Clayton, Missouri. You can contact the office directly through this profile page.
How long has John J. Duepner, Jr. practiced law?
John J. Duepner, Jr. has 41+ years of legal experience and has been licensed since 1985.
Where did John J. Duepner, Jr. go to law school?
John J. Duepner, Jr. earned their education at (J.D., 1985); (B.A. University, 1971).
How can I contact John J. Duepner, Jr. for a consultation?
You can contact John J. Duepner, Jr. 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 J. Duepner, Jr. received?
John J. Duepner, Jr.'s notable recognition includes: AV Preeminent.

Education

J.D.
St. Louis University
- 1985
B.A. University
University of Missouri-Columbia
- 1971

Awards

AV Preeminent

Bar Admissions

Missouri
Admitted: 1985
Illinois
Admitted: 1985

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