Business Details
20 Years
experience
Dallas Criminal Defense Lawyers | Law Offices of Mark T. Lassiter
The Law Offices of Mark T. Lassiter has been a trusted name in Dallas criminal defense since 2006. Our firm combines over 12 years of experience with a nationally recognized track record of success, including accolades such as Texas Super Lawyers designation, Top 100 Trial Lawyer recognition, and a perfect AVVO 10.0 rating. As Dallas natives, we deeply understand the local legal landscape and are committed to protecting the rights of Texans facing criminal charges. Our team approaches every case with compassion, transparency, and a relentless focus on achieving dismissals or reduced charges.With a proven history of handling complex cases involving DWI, drug offenses, assault, and more, we provide personalized legal strategies backed by both courtroom tenacity and strategic negotiation skills. Our dedication to client care extends beyond legal representation, offering free consultations and maintaining open communication throughout the legal process.
Services
DWI Defense
Drug Offenses
Assault Charges
Theft & Robbery
Expunction
Juvenile Crimes
Weapons Offenses
Sex Crimes
Intoxication Manslaughter
Title IX Defense
Details
- Year established: 2006
Highlights and features
- 12+ years of specialized criminal defense experience in Texas courts
- Nationally recognized legal excellence through Super Lawyers and Top 100 Trial Lawyers designations
- Compassionate, client-focused approach with free initial consultations
- Proven track record of case dismissals and charge reductions
- Former prosecutor insights into criminal defense strategy
Associations and certifications
- Texas Super Lawyers
- National Trial Lawyers Top 100
- AVVO 10.0
What people say
Case dismissed
Experienced attorneys
Compassionate representation
Successful outcomes
Aggressive defense
Services
DWI Defense
Our Dallas DWI defense attorneys specialize in challenging alcohol-related charges through technical analysis of breathalyzer calibration, field sobriety test validity, and constitutional rights violations. We employ former prosecutors' insights to identify weaknesses in the state's case while navigating administrative license revocation proceedings. Our strategic approach combines motion hearings to suppress evidence with jury trial readiness to achieve dismissals or reduced charges.
Drug Offenses
We defend against all levels of drug charges including possession, trafficking, and manufacturing allegations. Our team challenges chain-of-custody issues, laboratory testing procedures, and search warrant validity while developing defenses based on unlawful search and seizure violations. We work with forensic experts to contest drug quantity allegations and seek alternative sentencing options for eligible clients.
Assault Charges
Our firm handles misdemeanor and felony assault cases involving domestic violence, aggravated assault, and weapon enhancements. We investigate self-defense claims, challenge victim credibility, and contest injury severity classifications. Our attorneys leverage knowledge of Texas' self-defense laws and prosecutorial tactics to secure charge dismissals or reduced sentencing through plea negotiations.
Expunction Services
We assist clients in legally erasing criminal records through expunction and non-disclosure orders. Our process includes verifying eligibility based on case outcomes, preparing comprehensive legal documentation, and representing clients at court hearings. We specialize in complex cases involving dismissed charges, completed deferred adjudication, and juvenile records.
Juvenile Defense
Our juvenile defense practice focuses on minimizing long-term consequences through charge dismissal strategies and alternative sentencing programs. We work with specialized courts to secure educational diversion opportunities while protecting minors' future employment and educational prospects. Our approach emphasizes rehabilitation while maintaining aggressive defense tactics.
People
Mark T. Lassiter
Founding Attorney
Former Dallas County prosecutor with 12+ years of criminal defense experience. Recognized as Texas Super Lawyer and Top 100 Trial Lawyer. Holds AVVO 10.0 rating. Served as military officer in Airborne Infantry. Specializes in DWI, drug offenses, and violent crime defense.
Questions
What should I do immediately after a DWI arrest in Dallas?
Contact our office immediately to preserve evidence. We'll help request breathalyzer maintenance records, analyze police procedure compliance, and prepare for administrative license revocation hearings within the critical 15-day window.
Can first-time drug possession charges be dismissed?
Yes, through pre-trial motions challenging search warrant validity or lab testing procedures. Our team has secured dismissals by demonstrating unlawful search and seizure violations or chain-of-custody issues in drug evidence handling.
How does prior military service help my case?
Attorney Mark Lassiter's military background provides unique insights into working with veteran clients. We effectively present military service records and character references to mitigate sentencing in appropriate cases.
What's the difference between expunction and non-disclosure?
Expunction completely erases records from all agencies while non-disclosure seals records from public view. We determine eligibility based on case outcome and guide clients through the appropriate legal process.
Can assault charges be reduced to misdemeanors?
Yes, through plea negotiations or trial verdicts. We've successfully reduced felony assault charges to misdemeanors by challenging injury severity classifications and presenting self-defense evidence.
Do you handle juvenile criminal cases?
Yes, we specialize in juvenile defense focusing on record protection and educational continuity. Our attorneys work with specialized courts to secure diversion programs and minimize long-term consequences.
