Thiessen Law Firm is a premier criminal defense practice based in Aspen, Colorado, specializing in DUI and DWAI cases with a relentless, trial-tested approach to protecting clients’ freedom and reputations. Led by Board Certified DUI defense attorney Mark Thiessen, the firm stands out for its aggressive courtroom advocacy, scientific expertise in forensic law, and a record of securing not-guilty verdicts in high-stakes cases across the state.
The firm’s approach combines deep legal knowledge with meticulous case preparation, often leveraging expert witnesses to challenge evidence and police procedures. With recognition as a Super Lawyer and certifications from the National College for DUI Defense, Thiessen Law Firm is equipped to handle complex cases—from first-time offenses to felony charges—and prioritizes client accessibility, offering free consultations and 24/7 availability. They primarily serve individuals facing serious driving and criminal charges throughout Colorado.
Services Offered
- DUI Defense
- DWAI Defense
- 1st DUI
- 2nd DUI
- 3rd DUI
- Felony DUI
- DUID (DUI – Drugs)
- Vehicular Assault
- Vehicular Homicide
- Out-Of-State DUI
- Criminal Defense
- Personal Injury
- Skiing Accidents
- Family Law
- DMV Hearing Representation
- Jury Trial Representation
Serving clients throughout Colorado, including Pitkin County and Aspen, the firm is prepared to handle cases in both rural and urban jurisdictions, with a demonstrated history of favorable outcomes in challenging environments. Their team is dedicated to providing personalized, vigorous defense for those facing life-altering criminal and DUI charges.
