Atty. Jonathon Preston Maddern

Atty. Jonathon Preston Maddern

Jonathon Preston Maddern is a lawyer. Jonathon received a degree from University of California, Berkeley School of Law, Berkeley CA, and has been licensed for 8 years.

Newport Beach Newport Beach 8 yrs experience 8 year
Call (949) 570-9148 Book Appointment

Profile Summary

About Jonathon Preston Maddern at a glance

Jonathon Preston Maddern is an Attorney based in Newport Beach, California, practicing at Irell & Manella LLP. They have 8+ years of legal experience, licensed to practice since 2018. Admitted to practice in California (2018). Educated at University of California, Berkeley School of Law, Berkeley CA (—). Serands clients in Newport Beach, CA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Jonathon Preston Maddern is a lawyer
  • Jonathon received a degree from University of California, Berkeley School of Law, Berkeley CA, and has been licensed for 8 years
  • Jonathon practices at Irell & Manella LLP in Newport Beach, CA

Jurisdictional Context

Why local counsel matters in California

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

Looking for additional California attorneys? Browse all attorneys in Newport Beach or all attorneys in California.

Frequently Asked

Common questions about Jonathon Preston Maddern

Where is Jonathon Preston Maddern's law office located?
Jonathon Preston Maddern's law practice is located in Newport Beach, California. The firm is Irell & Manella LLP. You can contact the office directly through this profile page.
How long has Jonathon Preston Maddern practiced law?
Jonathon Preston Maddern has 8+ years of legal experience and has been licensed since 2018.
Where did Jonathon Preston Maddern go to law school?
Jonathon Preston Maddern earned their education at (—).
How can I contact Jonathon Preston Maddern for a consultation?
You can contact Jonathon Preston Maddern 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.

Education

University of California, Berkeley School of Law, Berkeley CA
- In Progress

Bar Admissions

California
Admitted: 2018

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