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HOUSTON DWI LAWYERS OBSESSED WITH WINNING

Mark Thiessen

The only DWI Attorney Selected To:

Texas Board of Legal Specialization in Criminal Law
DUI Defense Lawyers Association Board Certified
National College for DUI Defense Board Certified
Super Lawyers 2013-2020
Super Lawyers Top 100 in Houston & Texas
Lawyer Scientist
Avvo 10/10 Rating
Avvo Clients' Choice Award
Board Certified Advocate in Criminal Trial Law by the NBTA Foundation
AV Preeminent
TCDLA
Harris County Criminal Lawyers Association
National Trail Lawyer
Super Lawyers Rising Star 2010-2013

Notable Houston DWI Victories

not guilty

Intoxication Manslaughter / State v. J.J.

Bexar County No. 144

3/31/23

Client was a US Marshall and went to meet some of his buddies after training off of 1604. As he was driving home, he followed his GPS. When he got to 1604 by UTSA, the GPS told him to take a left. There was no left turn sign or direction of travel market at the T in the road. He mistakenly turned the wrong way up the freeway. By the time he realized he was going the wrong way and tried to turn his truck around, a young lady wasn’t paying attention and tried to take the exit. In the blink of an eye, they had a head on collision and she was gone. Client performed SFSTs fine and they took his blood. We actually had 2 experts in this case. One expert said this was the worst lab she had ever seen, between switching samples, improper treatment of the standard, high turnover, and the lab analyst being married to a man who spent 18 years in prison for intoxicated manslaughter. The other expert said in his 40+ years of looking at labs, it was the second worst lab he has seen and reviewed. The jury realized that our client was not intoxicated and returned a verdict of Not Guilty. They sent a big message to not use that lab in Bexar county for anymore blood testing. However, our client did not go home. The DAs decided to charge him with Reckless Manslaughter for going the wrong way on the freeway and that was reckless. Our client had never been arrested, was a government agent, with 2 kids and a family. It was just too emotional and the jury had to get him for something. It was one of the only cases I truly feel like I won and lost at the same time. I am still heartbroken over this verdict. While I have to trust the jury’s analysis, they chose to give this man prison instead of probation. I don’t know how they got to that decision. I truly believe in my heart that this man made a simple mistake and I get he was convicted, but he was not an animal. The prison system is hopelessly broken and should be reserved for extreme cases, one of which our client is not.

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Mark Thiessen

Mark Thiessen

Houston DWI & Criminal Law Specialist

“I’m a 4x Board Certified, trial-tested DWI Specialist focused on fighting for my client's freedom. If you hire our Houston DWI Law firm, we're available 24/7, because, at the end of the day, we work for you. As one of only three attorneys in all of Texas to be Board Certified in DWI Defense by NCDD and in Criminal Law by Texas Board of Legal Specialization, my clients can count on specialized, expert representation that most firms simply can’t deliver.”

What to expect?

Thiessen Law Firm. Well-known for both award winning Houston DWI Lawyers and aggressive trial-tested criminal defense techniques, we fight like no other, for your DWI case. Our trial attorneys not only fight for positive results, we also care deeply about the overall well-being of our clients.

Why Choose Thiessen Law Firm?

  • Proven Houston DWI Lawyer
  • Aggressive Criminal Defense Attorney
  • Board Certified in Criminal Law by Texas Board of Legal Specialization
  • Board Certified in DWI Defense Law by NCDD
  • ACS/CHAL Lawyer Scientist
  • The ONLY DWI lawyer to be selected to Top 100 Super Lawyers in Texas (2019-2023) and Houston (2017-2023)
  • Free DWI & Criminal Case Evaluation
  • No Hourly Rates
  • 24/7 Accessibility
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Houston DWI & trial lawyers that fight for you in Houston and all Texas counties

Our Houston DWI Attorneys always fight our hardest. We tell the truth about your DWI or DUI case, and facts take precedence over promises. We hold honesty and virtue in highest regard and it is the foundation of ensuring your DWI or criminal defense case ends with a satisfying, positive outcome.

When you get a Houston DWI, DUI or other criminal charge in Harris County, your life is changed, no matter the verdict. At Thiessen Law Firm, you will be represented by a Houston DWI lawyer who will ensure you’re able to continue on with the life you want. You’ll never feel forced into taking a deal that you don’t want, or accepting terms you don’t fully understand. Mark Thiessen isn’t just a top Houston DWI lawyer. He’s also recognized as an ACS CHAL Lawyer-Scientist for his efforts to understand the science and technology behind DWI testing. This investment in his education and training provides clients with the knowledge needed to fight for their rights effectively and fairly.

Back

121

Not Guilty Verdicts

100%

Client Satisfaction

138

Speaking Events

38

Awards

31

Publications

Latest DWI & Criminal Defense News

Mark Thiessen

November 27, 2023 . 6 min read

Mark Thiessen

November 23, 2023 . 6 min read

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Mark Thiessen

Mark Thiessen

Houston DWI Lawyer, Criminal Defense & Civil Trial Attorney

Taly Thiessen

Taly Thiessen

Houston Family Lawyer, Criminal Defense & Civil Trial Attorney

Kacie Penman

Kacie Penman

Houston Criminal Defense Lawyer & Houston DWI Attorney

Brad Runcie

Brad Runcie

Criminal Trial Attorney
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In The Media

In The Media
www.lubbockonline.com

Jurors find woman not guilty of intoxication manslaughter in fatal West Lubbock crash

The defense attorney for a 23-year-old woman said a flawed Lubbock police crash investigation provided enough reasonable doubt for a 12-member jury to find his client not guilty in a fatal 2014 West Lubbock wreck.

Read the full story

Speaking Engagements

As Houston’s DWI Super Lawyer, Mark Thiessen has consistently set high standards in his field since establishing his firm. His scientific investigation process & comprehensive list of victories has brought him to the forefront of national recognition as he is sought by industry leaders & legal organizations to deliver trial strategy seminars.

Austin, TX

TCDLA Intoxication Manslaughter CLE

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Epping, NH

NHACDL Criminal Law Seminar

Images, Analogies, and Stories

Knoxville, TN

TACDL Masters of DUI Seminar

Images, Analogies, and Stories

Happy Clients

Mark Thiessen is a criminal defense all-star. If he can’t get you a win, nobody can.

"Simply put, Mark Thiessen is a criminal defense all-star. If he can’t get you a win, nobody can. I’ve worked with Mark and his team on two very different cases, and both times I’ve been blown away by the level of honesty, strategy, and respect that Thiessen Law Firm brings to the table. You can feel the difference the second you step in the courtroom with Mark by your side. The time he has taken to build relationships and earn respect is clear. He knows how to push the envelope while still being respectful of the system when it matters. Best of all, he knows where the “win” is, even when “not guilty” isn’t possible. He won’t send you to trial when he knows it won’t work, and he won’t just roll over and charge you for the same lame deal everyone gets. Mark and ...

His knowledge of the legal system was astounding

After being arrested for a first time DWI, I felt scared, lost, and worst of all alone. I quickly started asking around and reading reviews. Time and time again the name Mark Thiessen was the main constant to every conversation or search. He, himself, called me back in less than 24-hours, set up a consultation the next day, answered all my outrageous questions patiently, and proceeded to give me an overview of how the process would play out. His knowledge of the legal system was astounding. Everyone knows DWI’s will come with a price tag as well. But I felt the price and payment plan were very reasonable, especially when your talking about your own future. You get what you pay for and WOW! I got that and even more through the process. Some people’s minds work systematically, if A happen...

In one word – Fantastic

I am in my late forties and was in a bit of legal trouble for the first time in my life. It is a very stressful time for somebody who is going thru this first time. First the arrest then going through the booking process and finally spending 8-9 hours waiting to be released. Once I got out I started my research on what to do to minimize the impact. My charge was failure to ID to a police officer (a class B misdemeanor - lets just say I was in the wrong place at the wrong time and when an officer showed up i panicked and did not want to give my ID in front of people who were being questioned for possession of drugs. Anyway i got a few references of lawyers and started going and meeting the lawyers and also doing internet research on them as well as on my pending charge. Since this wa...

This is the only lawyer you should choose for your peace of mind

Good evening, it took me a long time but finally I can actually express the sentiments I felt from the beginning of my nightmare to the end of it with leaps of joy. This is not a paid comment or was I ever asked to do it, from the beginning where you feel like the whole world is dark and you don’t see any light at the end of the tunnel, everyone at the Thiessen Law Firm welcomed me and my family but most importantly they were clear in their answers to the many questions I had. Never doubted on a positive outcome as I could see their expertise and the way they would be relaxed and calm on going about their business as if you were watching a perfectly synced movie! Ultimately Mr. Thiessen, Mr. Denuna and Ms. Bedru, all came through for my case and the most incredible thing was ha...

If Mark can’t get you a win, nobody can

Simply put, Mark Thiessen is a criminal defense all-star. If he can’t get you a win, nobody can. I’ve worked with Mark and his team on two very different cases, and both times I’ve been blown away by the level of honesty, strategy, and respect that Thiessen Law Firm brings to the table. You can feel the difference the second you step in the courtroom with Mark by your side. The time he has taken to build relationships and earn respect is clear. He knows how to push the envelope while still being respectful of the system when it matters. Best of all, he knows where the “win” is, even when “not guilty” isn’t possible. He won’t send you to trial when he knows it won’t work, and he won’t just roll over and charge you for the same lame deal everyone gets. Mark and his team carefully look at ...

The Best Lawyer in the Industry

I chose Mark Thiessen to represent me in a DUI / DWI case and it was the best selection/decision that I could have made. I found out about Mark through Internet search and reached out to him and his office. Upon meeting with Mark - I immediately knew that he was the right lawyer/attorney to represent me and give me the best opportunity to win my case. Mark is an expert attorney with a work ethic that is second to none. He is always available. He is a master of his craft and will give you the best opportunity to win your case. He will be prepared and he will do everything to ensure your case is won. He will actually be more knowledgable on the aspects of law, facts of the case, than the individuals that have accused you of your offense. He was highly successful in my case, even despite s...

Douglas

DWI Client

Excellent Attorney to Have Represent You

Because of the seriousness of my case (serious for me), I had been researching and meeting with many different lawyers in the area. I felt like my life was unfairly ruined; I even considered pleading guilty just because it seemed the odds were against me. What made me choose Mark was not only his positive reviews and great record, but when I first met him he was confident, honest, straightforward and very knowledgeable. He definitely knows what he's doing and will fight for you. Mark will not fudge or sugarcoat the situation to you. While some people may take it as not caring, it is exactly was is needed in this type of environment. I appreciated that he was very honest and gave all the details to keep me informed throughout the entire ordeal. I ended up getting both Mark and Jed Sil...

Mark eres mi hombre que luchó por mi libertad y justicia!!!

La desafortunada noche que por causa de un accidente automobilistico, fue detenida, evaluada por un oficial de la policia y luego arrestada bajo cargos erroneos de Manejo en Estado de Ebriedad (DWI) o bajo la influencia de alcohol, fue la peor noche de mi vida. Al haberte resistido a tomar la prueba de respiratoria evidencial en un fin de semana el cual era digtado como "Sin Derecho a Refutir" dicha prueba, determinó el derecho del estado a una prueba de sangre al ser encarserada. Estos resultados de sangre fueron sumamente altos al ser recibidos, lo cual significaron el problema mas transcendente de mi vida, afectando mi carrera profesional al punto de descenso absoluto, y descalificame como aplicante para recibir mi ciudadania Americana, la cual ya era factible por mi tiempo siendo...

I couldn’t have gone with a better law firm

I have to start off by saying how thankful I am that my case was dismissed. I never thought I would need a criminal lawyer but life happens. Mark kept me informed during the entire process. My case was rescheduled a few times, which was incredibly frustrating, but Mark kept calm. He had a game plan from start to finish. I couldn't have gone with a better law firm.

I recommend Mark Thiessen

Bonjour. Je tiens à apporter ici le témoignage de mon entière satisfaction concernant l’action menée par Maitre Thiessen au cour de l’instruction préalable à mon procès devant la cour criminelle du comté de Harrys. Je me suis fait arrêté par la police et contrôlé positif à l’éthylomètre au volant. Ceci est considéré comme un crime au Texas. Après avoir passé deux jours en prison j’ai été relâché sous caution et j’ai pris contact avec Maitre Thiessen sur les conseils d’un collègue de travail. Maitre Thiessen était connu de mon collègue après une conférence qu’il avait faite au sein de l’entreprise afin d’exposer et d’expliquer les lois en vigueur au Texas auprès des expatriés. (je n’étais malheureusement pas présent le jour de cette conférence !) Pendant toute l’instruction, Mai...

My case is now dismissed and I can finally put this all behind me.

I am a professional business leader part of a Fortune 1,000 company. A year and a half ago my mother has just diagnosed with stage four ovarian cancer. At 8 pm on a Thursday night my stepdad called and told me that she had been rushed to the medical center. I made a terrible decision!! To get in my car to be there for my mother. I was pulled over and charged with Driving while intoxication. Never being faced with anything like this, I did not where to turn for help. I called a friend that had gone through something very similar in the past and she without hesitation told me to call Mark, she gave me his cell phone number and within 24 hours I was sitting in his office. He was very honest and sympathetic to my situation. He took my case and we went through the process. He always t...

You Cannot Compare Anybody with Mr.Mark!

I was accused by my own wife. It was a painful incident happened in my life. She said to the police that I was threatening to kill her and beaten her. She did this to be because she was looking for lot of money from me and I couldn’t give her the money. She was so bad that she even made proofs with the doctors. There was witness from Doctors and nurses and even some voice recordings. She allowed the doctors and nurses even to record our loud conversions. There were lot of accuses on me and the case was very strong. But in front of Mark nothing can stand. I had just two resets and the time. The first one was just a day adjustment and the next one was just 2 weeks. On the second reset, I went to the court and heard shocking news. My wife again called the court and said that I was threa...

Choosing a Houston DWI Lawyer

If you or a loved one are fighting a Houston DWI, it may be tempting to search for cheap DWI lawyers in Houston, TX. Don’t gamble with your freedom and reputation, even a DWI in Texas, first offense can be life-altering.

In fact, every DWI and criminal offense is serious: DPS surcharges, intoxication manslaughter, a BWI in Houston. Look beyond a DWI lawyer in Houston and their cost, you need a Houston DWI attorney who wins.

For example, many websites may claim to be the best DWI lawyer in Texas. But how many of those DWI attorneys have beat a quadruple intoxication manslaughter charge? Thiessen Law Firm has. In fact, our Houston DWI lawyers have beaten intoxication manslaughter charges, DWI blood tests, DWI breath tests, and have even seen successful outcomes where a client admitted to being drunk on video.

In addition to being a Super Lawyer and ACS-CHAL Lawyer Scientist, DWI Specialist Mark Thiessen is the only attorney in America who is quadruple Board Certified in the following areas:

  • Criminal Law by the Texas Board of Legal Specialization
  • DUI Defense by the National College for DUI Defense as approved through the American Bar Association
  • DUI Law by the DUI Defense Lawyers Association
  • Board Certified Advocate in Criminal Trial Law by the NBTA Foundation
Mark is also rated a 10.0 Superb Avvo-rated lawyer with 100% client satisfaction.

Don’t worry about finding a “DWI lawyer near me”, Thiessen Law Firm fights DWI in Texas, all across the state. Need a DWI Lawyer in Galveston County? The team of Houston DWI attorneys at Thiessen are ready to fight for you.

Get the winning Houston DWI team on your side, request a free consultation below.

Free DWI & Criminal Case Consultation

Call 713.864.9000 or fill out the form below for a free consultation.

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