Mark O Mark Brien, Business Attorney in Dallas, Texas
Over 40 years of legal practice
1st V.P.
Dallas, TX
Practicing business in Dallas since 1986.
- 40+
- Years practicing
- 2
- Bar admissions
Practices in
Are you Mark O Mark Brien?
This profile was built from public bar records and is still unclaimed. Claim it free to control your photo, bio, and fees — and get client inquiries sent straight to you.
Quick answer
Mark O Mark Brien is a 1st v.p. based in Dallas, TX. The practice focuses on Business. Mark has over 40 years of legal experience.
- Based in
- Dallas, TX
- Experience
- over 40 years
- Known for
- Business
- Handles Business matters from Dallas, TX.
- Over 40 years of practice as a licensed attorney.
About Mark O Mark Brien: Mark O Mark Brien is a 1st v.p. based in Dallas, TX. The practice focuses on Business. Mark has over 40 years of legal experience.
Areas of practice
Mark's practice areas in Dallas
Mark concentrates on business. Each area below outlines the kind of case Mark handles, typical outcomes to expect, and how the intake process starts.
Business cases in Dallas, Texas
Mark takes business matters in Dallas, Texas. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Mark agrees to represent you.
Biography
Mark O Mark Brien, business attorney serving Dallas
Mark O Mark Brien is a 1st v.p. based in Dallas, TX. The practice focuses on Business. Mark has over 40 years of legal experience. Mark works from Dallas, Texas and takes on business matters across the region.
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.
How Mark handles business matters
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.
Who Mark represents
Mark reviews new inquiries case-by-case for business matters in Dallas and the surrounding Texas area.
Credentials
Credentials — where Mark studied and practices
Southern Methodist University
J.D. · 1986
Georgetown University
B.A. · 1983
Jurisdictions
Mark's state bar admissions
Colorado
1995 · ACTIVE
Texas
1986 · ACTIVE
Mark studied at J.D. in Southern Methodist University and B.A. in Georgetown University.
Law school and academic background
Mark completed J.D. in Southern Methodist University and B.A. in Georgetown University. Formal legal training is one signal of substantive knowledge — the day-to-day practice Mark runs in Texas is where that training gets applied to real client questions.
Locations
Mark O Mark Brien's office in Dallas
Mark's primary office is at 5956 Sherry Ln Ste 1900, Dallas, TX, 75225-8030. In-person meetings are by appointment; a phone intake usually comes first.
Client feedback
Client reviews of Mark O Mark Brien
Mark has not yet collected verified client reviews on LawyersListed. Reviews here are all from confirmed clients; anonymous ratings are moderated out.
No reviews yet
Only verified clients who have consulted with Mark O Mark Brien can leave a review.
Schedule your consultationHiring guide
How to hire Mark O Mark Brien — what to expect in your first consultation
Working with a new business attorney should feel structured. Here's how the first two conversations with Mark usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
Mark charges for the initial consult. That fee is credited toward representation if you retain Mark's office.
What to bring to your first meeting
Bring any documents you already have — police reports, medical records, filed pleadings, correspondence from an insurer, a copy of the contract at issue. If you're not sure, err on the side of bringing everything; Mark will tell you what matters and what doesn't.
Questions to ask a business attorney in Dallas, Texas
A short list to run through before you commit: How many business matters have you handled in the last year? What's your fee structure? Who else in the office will work on this? What's your realistic estimate of timeline and range of outcomes? How do I reach you between meetings?
Fees & payment
Fees, payment methods, and consultation options for Mark
Mark discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in business practice — ask which fits.
Hourly rates, contingency fees, and flat-fee options
Every business matter is priced differently. Simple document review might be a flat fee. Injury litigation is often contingency. Complex commercial disputes usually run hourly with a retainer. Mark confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
Mark's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many business practices work with clients on structured schedules.
Frequently asked
Frequently asked questions about Mark O Mark Brien
How much does it cost to hire Mark for a business case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Mark walks through the likely range during the consult so there are no surprises.
Does Mark offer a free consultation?
Mark charges for the initial consult; that fee is credited toward representation if you retain Mark's office. Some business attorneys offer free consults — check Mark's current terms during booking.
How long do business cases in Texas typically take?
Simple business matters can wrap in a few weeks; disputed cases can run 6–18 months from intake to resolution, longer if the matter goes to trial. Mark gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can Mark take my case if I'm outside Dallas?
Mark is licensed in Texas. Matters governed by Texas law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Mark will tell you if the case is a fit or refer you to someone closer to your court.
What should I bring to my first meeting with Mark?
Bring every document that touches the dispute: contracts, correspondence, police or medical reports, filed pleadings, invoices, photographs, insurance letters. Also bring a written timeline of what happened, in your own words. Mark will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is Mark accepting new business clients right now?
Mark's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.
Areas served
Business attorneys serving Dallas, Houston and Austin in Texas
Mark handles business matters throughout Texas. Each city below is a direct link into the search page for verified business attorneys in that community.
More counsel
Other top-rated business attorneys in Texas
If Mark's intake is full or the fit isn't right, these business attorneys in Dallas handle similar matters. Every profile below is verified and open to consultations.





