Atty. Mark P. O'Brien III

Atty. Mark P. O'Brien III

Mark P. O'Brien III is a lawyer.

Santa Ana Santa Ana 4 yrs experience 4 year
Call (949) 570-9148 Book Appointment

Profile Summary

About Mark P. O'Brien III at a glance

Mark P. O'Brien III is an attorney based in Santa Ana, California. They have 4+ years of legal experience, licensed to practice since 2022. Admitted to practice in California (2022). Serands clients in Santa Ana, CA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mark P. O'Brien III is a lawyer
  • Mark has been licensed for 4 years
  • Mark practices in Santa Ana, 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 Santa Ana 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 Santa Ana or all attorneys in California.

Frequently Asked

Common questions about Mark P. O'Brien III

Where is Mark P. O'Brien III's law office located?
Mark P. O'Brien III's law practice is located in Santa Ana, California. You can contact the office directly through this profile page.
How long has Mark P. O'Brien III practiced law?
Mark P. O'Brien III has 4+ years of legal experience and has been licensed since 2022.
How can I contact Mark P. O'Brien III for a consultation?
You can contact Mark P. O'Brien III 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

California
Admitted: 2022

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