Mark Thiessen, tenacious Houston DWI trial lawyer and Principal Attorney at Thiessen Law Firm, stands at the forefront of DWI and criminal law. Mark’s rich and storied background include many accolades and distinctions, including being the youngest criminal Super Lawyer in Texas in 2013 and a 12-time Texas Super Lawyer as of 2023.
Mark is the only lawyer in America who is quadruple board-certified in the following:
- 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
Notably, he also holds the American Chemical Society-Chemistry and the Law’s Forensic Lawyer-Scientist designation, the highest form of scientific recognition available to attorneys and a testament to his commitment to scientific rigor in his practice.
Born and raised in Houston, Mark’s legal journey started at South Texas College of Law, with international studies in Malta, London, and Hawaii. After initially practicing civil law, he found his passion in criminal law, leading to the establishment of Thiessen Law Firm. His specializations include complex DWI and controlled substances cases, showcasing a comprehensive understanding of both complex legal principles and the related scientific disciplines.
Beyond the courtroom, Mark is a sought-after legal seminar lecturer, author, and faculty member. He holds key positions in legal associations, including the DWI Committee co-chair for the Texas Criminal Defense Lawyers Association and leadership roles in the Harris County Criminal Lawyers Association and DUI Defense Lawyers Association.
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At Thiessen Law Firm, our commitment to excellence extends to our unwavering dedication to providing clients with clear, credible, and evidence-based legal guidance. As a trusted authority in the legal field, every aspect of our content, case descriptions, and services undergoes a rigorous review process.
Spearheaded by Mark Thiessen, our team of legal experts brings extensive knowledge across diverse fields, ensuring accuracy and relevance in all our legal counsel. From criminal defense strategies to DWI cases, our thorough review process reflects our commitment to upholding the highest standards in the legal profession.
