Mark Ryan Thiessen
The Thiessen Law Frim | Thiessen Law Firm • Houston, TX
Dui DwiDUI & DWI Criminal Defense Personal Injury
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Contact
Email
mark@thetexastrialattorney.com
Phone
(281) 612-5980
Twitter/X
Address
733 E. 12 1/2 Street, Houston, TX, 77008, US
Professional
About
Born and raised in Houston, Texas. Went off to college at TCU and came back home for law school. I know Houston. I am raising my family in Houston. I love Houston. It's my job to protect the citizens of Houston. Having long had strong ties to the greater Aspen area, my wife and fellow attorney Taly and I have opened a second office in Aspen. We look forward to bringing the results we have been achieving for over a decade in Houston to the people of Aspen! My favorite part of this job is going to trial. And, it's that love of trial that gets great results before a trial is necessary. Too often the State will try and force you into a deal. Let me analyze the case. Let me analyze the State. The State has the burden of proof to prove that you committed that crime beyond a reasonable doubt. Don't go down without taking a swing of the bat. But, it's best to bring the biggest bat you can carry. I live by my word and will always be straight with you. When you hire me, I will give you my cell phone number and you can call/text/email me at any time. Afterall, I work for you.
About Dui Dwi Law
DUI/DWI attorneys defend individuals charged with drunk or impaired driving. They protect clients' rights and work to minimize consequences. Common matters include dui defense, dwi defense, license suspension, ignition interlock.
Credentials
Education
2003 South Texas College Of Law JD - Juris Doctor 2000 Texas Christian University Bachelor of Business Administration 1996 The Kinkaid School High School Diploma N/A William S. Richardson School of Law, University of Hawaii
Languages
Spanish | English
Recognition & Involvement
Awards
2025 Top 100 Super Lawyers in Texas, Thomson Reuters 2024 Top 100 Super Lawyer in Texas, Thomson Reuters 2023 Board Certified Advocate in Criminal Trial Law, NBTA Foundation 2023 Top 100 Super Lawyers in Texas, Thomson Reuters 2022 Top 100 Super Lawyers in Texas, Thomson Reuters
Publications
2018 Various Magazines SEE MY WEBSITE FOR CURRENT PUBLICATIONS 2014 The Voice (TCDLA)) Not Guilty v Goliath; Beathing High Blood Tests Using the Disconnect Defense 2012 HCCLA Defender Magazine Falesly Elevated Ethanol Results Using Hospital Enzymatic Assay Blood Testing 2012 The Voice (TCDLA)) Falsely Elevated Ethanol Results Using Hospital Enzymatic Assay Hospital Blood Testing 2011 HCCLA Defender Building the Disconnect Defense
Associations
2017 - Present Texas Criminal Defense Lawyers Association Board of Directors 2016 - Present DUI Defense Lawyers Association Board Member, Officer 2010 - Present Harris County Criminal Lawyers Association Board of Directors 2010 - Present Team Hoger MMA and Muay Thai Member 2008 - Present Harris County Criminal Lawyers Association Member
Speaking
2018 ALL OVER USA SEE MY WEBSITE FOR CURRENT SPEAKING ENGAGEMENTS 2015 Prairie Dog Seminar Not Guilty v Goliath; Beating High Blood Tests Using the Disconnect Defense 2014 TCDLA: Top Gun DWI Seminar Blood Test Voir Dire & Preparing the Jury for Acquittal 2014 TCDLA: Cross Examination Cross of DWI Blood Expert 2014 TCDLA Lone Star DWI Blood 101: Basics of Blood Testing & Taking Down High Blood Tests Using the Disconnect Defense
Updated: Jun 01, 2026