Business Details
32 Years
experience
Your Trusted Riverside Criminal Defense Attorney
As a seasoned criminal defense attorney with nearly three decades of experience, I have dedicated my career to protecting the rights of individuals facing serious legal challenges. My unique background as a former rocket scientist at Norton Air Force Base equips me with analytical precision and problem-solving skills that directly benefit my legal strategies. Since 1994, I have successfully represented clients in Riverside and surrounding areas, specializing in DUI defense, expungement, and complex criminal cases. My practice emphasizes personalized attention, leveraging both technical expertise and deep knowledge of the justice system to achieve favorable outcomes. I am committed to community service, coaching high school mock trial teams and teaching mathematics to empower youth.Every case receives a tailored defense plan, whether through trial litigation, plea negotiations, or record clearance. My track record includes dismissing DUI charges, reducing felony convictions, and securing alternative sentencing programs. Clients consistently praise my ability to navigate complex legal issues with clarity and dedication. Transparency is paramountthere are no guarantees in law, but I ensure every client understands their options and risks. My mission remains unwavering: to defend constitutional rights, challenge flawed evidence, and provide second chances through expungement. With offices in Riverside, I serve clients across Southern California, combining technical rigor with compassionate advocacy.
Services
Criminal Defense
DUI Defense
Expungement
Drug Crimes Defense
Violent Crimes Defense
Theft and Robbery Defense
Domestic Violence Defense
Identity Theft Defense
Probation Termination
Criminal Record Cleanup
Details
- Year established: 1994
Highlights and features
- 30 years of specialized criminal defense experience
- Former rocket scientist applies technical precision to legal strategy
- Proven success in DUI case dismissals and felony reductions
- Personalized defense plans for each client's unique situation
- Community-focused practice with mock trial coaching and education
What people say
Proven track record
Personalized legal strategies
Successful case outcomes
Community involvement
Expertise in DUI defense
Services
Criminal Defense
Comprehensive defense representation for misdemeanor and felony charges including assault, drug offenses, and theft. Utilizes technical expertise and courtroom experience to challenge evidence, negotiate plea deals, or secure trial verdicts. Focuses on minimizing penalties and protecting clients' futures through strategic legal approaches.
DUI Defense
Specialized defense for alcohol and drug-related driving charges. Challenges breathalyzer accuracy, field sobriety test validity, and procedural errors. Implements strategies like rising blood alcohol defense and ignition interlock device programs to reduce penalties or secure case dismissals while addressing license suspension issues.
Expungement
Legal process to dismiss past convictions or reduce felony charges. Helps clients complete probation early, obtain certificate of rehabilitation, or qualify for pardon. Focuses on restoring employment opportunities and removing legal barriers through Riverside County's expungement procedures for misdemeanors and eligible felonies.
Drug Crimes Defense
Defense against possession, trafficking, and manufacturing charges for controlled substances. Challenges search and seizure legality, prosecutes diversion program eligibility, and negotiates reduced sentences. Addresses both recreational and prescription drug cases with strategies tailored to specific charges and evidence.
Violent Crimes Defense
Representation for assault, domestic violence, and firearm-related charges. Investigates self-defense claims, challenges witness credibility, and addresses sentencing enhancements. Focuses on distinguishing accidental conduct from intentional harm while protecting clients' constitutional rights throughout the legal process.
People
Mark Cantrell
Attorney at Law
Criminal defense attorney with 30 years of experience, former rocket scientist at Norton Air Force Base, and Riverside Community College mathematics instructor. Specializes in DUI defense, expungement, and complex criminal trials. Recognized for technical expertise in challenging forensic evidence and securing case dismissals.
Questions
Why should I hire a private attorney instead of using a public defender?
Private attorneys like Mark Cantrell provide dedicated representation without government pressures, offering personalized strategies and proven trial experience that public defenders often cannot match due to heavy caseloads.
What's the difference between DUI and DWI in California?
California uses 'DUI' (Driving Under the Influence) for alcohol or drug impairment. DWI terminology applies in other states. DUI charges focus on impairment level or blood alcohol concentration above 0.08%.
Can I get my criminal record expunged in Riverside County?
Yes, if you completed probation or served your sentence. The expungement process allows case dismissal, enabling honest disclosure of no conviction for most employment purposes.
What are common DUI defense strategies?
Challenges to breathalyzer accuracy, field sobriety test reliability, and procedural errors. Specific strategies include rising blood alcohol defense, GERD-related false readings, and improper observation periods before testing.
How does probation termination work?
Under Penal Code 1203.3(a), judges may end probation early for good conduct. This requires demonstrating rehabilitation and justifying relief through formal court motion and hearing process.
What happens if I refuse a breathalyzer test?
Refusal triggers automatic DMV license suspension and may be used as evidence against you. However, it sometimes prevents prosecution from obtaining key chemical evidence for their case.
