Mark R. Thiessen

Mark R. Thiessen

Fighting for the People and Winning.

733 E. 12th 1/2 Street
Houston, TX 77008

Phone: 713-864-9000

Website: http://www.thetexastrialattorney.com

Board CertifiedGeneral Member

About Mark R. Thiessen

Mark Thiessen is a criminal trial lawyer and the Chairman/CEO of the Thiessen Law Firm in Houston, Texas. Mark is Board Certified in (1) Criminal Law by the Texas Board of Legal Specialization 2018; (2) DUI Law by the DUI Defense Lawyers Association 2018; and (3) DUI Defense Law by the National College for DUI Defense through the American Bar Association 2020. Mark earned the American Chemical Society-Chemistry and the Law (ACS-CHAL) Forensic Lawyer-Scientist designation, which is the highest form of scientific recognition available for lawyers. Mark is a frequent legal seminar lecturer, author of numerous published legal articles, and a faculty member for various organizations. Mark is the current DWI Committee co-chair and on the Board of Directors for Texas Criminal Defense Lawyers Association (TCDLA), 2020-21 President of Harris County Criminal Lawyers Association (HCCLA) and a Charter Member and Parlimentarian for DUI Defense Lawyers Association (DUIDLA). Mark is a 7 time Texas Super Lawyer and in the Top 100 Super Lawyers in Houston (2017-19). In 2019, Mark was the only DWI lawyer to be named to the Top 100 Super Lawyers in all of Texas. Mark has won DWI cases from total refusals up to quadruple intoxication manslaughter.


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FROM OUR BLOG

I Still Stand With You

07/28/2020

By Jonathan Dichter Continuing to Remember What Our Clients Really Need Some years ago, I wrote an article for a Washington State Defense Journal entitled "I Will Stand With You." I have received amazing feedback from it including a local public defense agency making it part of their required reading for new hires. Our world has changed since then - drastically as of...

New York Times Investigation: Breathalyzers are Unreliable Machines and Should Not be Trusted

07/06/2020

By Kevin Bennett Breathalyzer devices can be found in every police station in the country. Law enforcement use them as indisputable proof of a driver's blood alcohol level, incorporati0ng them into evidence when prosecuting suspected drunk drivers. However, there is a growing body of evidence to suggest breathalyzers are not a reliable tool when it comes to measuring how intoxicated a...

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