Atty. John Maston Oneal

Atty. John Maston Oneal

Mr. John Maston Oneal is a lawyer practicing general practice.

Phoenix Phoenix 32 yrs experience 32 year
Call (602) 666-7393 Book Appointment

Profile Summary

About John Maston Oneal at a glance

John Maston Oneal is an Attorney based in Phoenix, Arizona, practicing at Quarles And Brady Llp. They have 32+ years of legal experience, licensed to practice since 1994. Admitted to practice in Arizona (1994). Serands clients in Phoenix, AZ and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mr. John Maston Oneal is a lawyer practicing general practice
  • John has been licensed for 32 years
  • John practices at Quarles & Brady LLP in Phoenix, AZ

Jurisdictional Context

Why local counsel matters in Arizona

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

Looking for additional Arizona attorneys? Browse all attorneys in Phoenix or all attorneys in Arizona.

Frequently Asked

Common questions about John Maston Oneal

Where is John Maston Oneal's law office located?
John Maston Oneal's law practice is located in Phoenix, Arizona. The firm is Quarles And Brady Llp. You can contact the office directly through this profile page.
How long has John Maston Oneal practiced law?
John Maston Oneal has 32+ years of legal experience and has been licensed since 1994.
How can I contact John Maston Oneal for a consultation?
You can contact John Maston Oneal 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.

Practice Areas

Bar Admissions

Arizona
Admitted: 1994

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