Atty. Mark O Mark Brien

Atty. Mark O Mark Brien

Mark O Mark Brien is a lawyer practicing investment banking, banking law. Mark received a B.A. degree from Georgetown University in 1983, and has been licensed for 40 years.

Dallas Dallas 40 yrs experience 40 year
Call (945) 219-2678 Book Appointment

Banking Law & More Attorney · Serving Dallas, TX · 40+ Years Experience

Profile Summary

About Mark O Mark Brien at a Glance

Mark O Mark Brien is a 1st V.P. based in Dallas, Texas. They have 40+ years of legal experience, licensed to practice since 1986. Their practice focuses on business. Admitted to practice in Texas (1986) and Colorado (1995). Educated at Southern Methodist University (J.D., 1986) and Georgetown University (B.A., 1983). Serves clients in Dallas, TX and the surrounding metropolitan area.

Verified attorney profile · Updated October 2026

About Mark O Mark Brien

  • Mark O Mark Brien is a lawyer practicing investment banking, banking law
  • Mark received a B.A. degree from Georgetown University in 1983, and has been licensed for 40 years
  • Mark practices in Dallas, TX

Practice Areas Explained

Mark O Mark Brien's Areas of Legal Practice

Each practice area below reflects the types of cases Mark O Mark Brien handles, with a practical overview of what that area of law involves and how it may apply to your situation in Dallas.

Business & Corporate Law in Dallas

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

Mark O Mark Brien is one of 497,491 business attorneys indexed nationally. Browse business attorneys in Texas →

Jurisdictional Context

Why Local Counsel Matters in Dallas

Practicing law in Texas. Legal matters in Texas are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Dallas are typically filed in the local municipal court or the appropriate Texas state district court, depending on subject matter and amount in controversy. An attorney licensed in Texas brings working knowledge of local procedural deadlines, judicial practices in this venue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Texas courts without local counsel or pro hac vice admission.

Dallas Courts and Legal Process

Choosing a Dallas-based attorney means your counsel already knows the local docketing timelines, preferred filing formats, and how individual judges typically rule on procedural motions — details that only come from practicing in this jurisdiction day after day. That local familiarity can translate to better strategy, faster filings, and fewer costly surprises.

Looking for additional Texas attorneys? Browse all attorneys in Dallas or all attorneys in Texas.

Frequently Asked

Common Questions About Mark O Mark Brien

Where is Mark O Mark Brien's law office located?
Mark O Mark Brien's law practice is located in Dallas, Texas. You can contact the office directly through this profile page.
What practice areas does Mark O Mark Brien handle?
Mark O Mark Brien focuses on business. Each practice area listed reflects experience handling cases of that type in Texas.
How long has Mark O Mark Brien practiced law?
Mark O Mark Brien has 40+ years of legal experience and has been licensed since 1986.
Where did Mark O Mark Brien go to law school?
Mark O Mark Brien earned their education at (J.D., 1986); (B.A., 1983).
How can I contact Mark O Mark Brien for a consultation?
You can contact Mark O Mark Brien 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.

Professional Profile

Why Clients in Dallas Choose Mark O Mark Brien

Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish Mark O Mark Brien's practice in the field of business.

Decade-Tested Legal Experience

Mark O Mark Brien brings 40+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.

Multi-State Bar Admission

Licensed in Texas and Colorado, Mark O Mark Brien can represent clients in cases that span state lines or require counsel in multiple jurisdictions.

Focused Business Practice

Concentrating on business means Mark O Mark Brien's knowledge of relevant statutes, case law, and procedural nuances stays current — unlike generalist practices that spread attention across unrelated fields.

Local Presence in Dallas

A Dallas-based practice means Mark O Mark Brien attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.

Case Types

Common Legal Issues Mark O Mark Brien Handles in Dallas

Below is a representative sample of the types of matters Mark O Mark Brien has experience with under Texas law. If your situation involves one of these case categories, this attorney may be well positioned to help you understand your options.

Business formation and structure
Business
Contract drafting and review
Business
Partnership disputes
Business
Merger and acquisition support
Business

This list is illustrative, not exhaustive. Contact Mark O Mark Brien directly to discuss the specifics of your situation.

Search Reference

How People Find Mark O Mark Brien Online

Prospective clients searching for legal help in Dallas commonly use a combination of the attorney's name and their specific legal need. The following search terms frequently lead people to this profile and to attorneys like Mark O Mark Brien.

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If any of the above matches what you searched for, you've found the right profile. Use the contact options at the top of this page to get in touch with Mark O Mark Brien directly.

Mark O Mark Brien's Practice Areas & Specializations

Education & Law School Background

J.D.
Southern Methodist University
- 1986
B.A.
Georgetown University
- 1983

Bar Admissions & Licensed Jurisdictions

Texas
Admitted: 1986
Colorado
Admitted: 1995

Client Reviews & Ratings — Mark O Mark Brien

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