DWI threatening your professional career?
The DA is coming for your career. Protect your livelihood — get your free consultation with a DWI lawyer who actually wins.
150+ Not Guilty verdicts
1000s of cases dismissed
Texas’ only triple board certified DWI lawyer
150+ Not Guilty Verdicts, Thousands of Cases Dismissed
150+ Not Guilty verdicts, thousands of cases dismissed
Right now, while you're reading this, prosecutors and police are actively building their DWI case against you. They're not waiting. They're not taking breaks. They're working around the clock to destroy the career you spent decades building.
Here’s what they don’t want you to know: not every DWI defense attorney can win a case like yours.
I've seen it happen thousands of times. Professionals — people just like you — get steamrolled by the system because they hired the wrong lawyer. I'm talking about those attorneys who talk a big game on a billboard but push you toward a plea deal the moment they see a blood test. They have thousands of cases, and they've already been paid for their time.
My name is Mark Thiessen founder of Thiessen Law Firm
I'm one of the only attorneys in Texas who is triple board-certified in DWI defense. I didn't get these certifications by accident. I got them because I'm passionate about protecting professionals' careers, and I earned my reputation by winning DWI cases my clients thought were impossible.
I've secured over 150 Not Guilty verdicts in DWI cases, and gotten thousands of cases dismissed — including cases with blood test results over .15, roadside tests officers claimed proved intoxication, and evidence that seemed overwhelming.
But a DWI charge is not a conviction, and I get up in the morning every day to make sure my clients' charges don't turn into convictions that will cost them their professional licenses and careers.
I recommend you move quickly. Every minute you wait is another minute I don't have to start building your defense and protecting your livelihood.
What makes me different? I don't make promises I can't keep. I don't sugarcoat the truth. And I don't lose cases I should win
If you're ready to fight for your career instead of just hoping for the best, call me. The consultation is free, and unlike other attorneys, I'll tell you the truth about your case — even if it's not what you want to hear.
Your future is on the line. Don't gamble with it.
Mark Thiessen
Triple Board-Certified DWI Defense Specialist
Founder of Thiessen Law Firm
The biggest lie prosecutors tell defendants
(and why most attorneys go along with it)
The only DWI attorney in America with these qualifications:
Battle tested. Proven results.
DWI 2nd / State v. C.M.
NOT GUILTY
TBD
Harris County No. 5
DWI 4th / People v. B.D.
NOT GUILTY
TBD
Jackson County 8th District Court
DWI 2nd / State of Texas v. H.E.
NOT GUILTY
TBD
Freestone County
Why clients text me at 5 AM (and I actually respond): my promise to clients
How it works
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Step 1: My team learns who you are
We interview you to understand your background, your family, your life, and exactly what happened. Because you’re not just a case number – you’re a person whose future is on the line.
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Step 2: We tell you what you’re up against
We'll break down the law and give you our initial assessment of your defense options. No legal jargon. No legal jargon. Just straight talk about where you stand.
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Step 3: We give you the honest truth about your case
Here's where we’re different: While others will promise you the moon in hopes that you’ll hire them on the spot, we choose honesty over false hope. The truth is, they haven't seen the evidence, and they're just telling you what you want to hear.
We promise we will always give it to you straight, even when it isn’t what you want to hear.
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Step 4: You make your decision. You hire the best lawyer.
We will never pressure you into making a decision. We encourage you to go home, think about it, and talk to your family. When you’re ready for us to get to work, give us a call. We’ll be here waiting to protect your future.
The entire consultation is FREE and comes with zero obligation to hire us.
© Thiessen Law Firm. All rights reserved.
Our Location
733 E. 12 1/2 Street
Houston, TX 77008
733 E. 12 1/2 Street
Houston, TX 77008
The information on this website is for general information purposes only. Nothing on this site should be taken as legal advice for any individual case or situation. This information is not intended to create, and receipt or viewing does not constitute, an attorney-client relationship.
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We pride ourselves on helping our clients feel heard, respected, and fairly represented. Take a look through their stories to see how working with Thiessen Law Firm changed their lives.
About to lose everything? Your freedom, your future, and your family… here's exactly how to keep it all
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