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Trusted DUI and Criminal Defense Lawyers in Riverside, CA
At Law Offices Of Amster Seymour I, we understand the gravity of criminal and DUI charges and the profound impact they can have on your life. With decades of combined experience, our firm has established itself as a leader in defending clients across Riverside County and the Inland Empire. Our attorneys, recognized by prestigious organizations such as the California DUI Lawyers Association and the National College for DUI Defense, bring unparalleled expertise to complex cases involving DUI, drug offenses, domestic violence, and appellate law.We pride ourselves on our assertive courtroom representation, client-centered approach, and a track record of securing dismissals, reduced charges, and acquittals. Our commitment to excellence is reflected in our Super Lawyer designations, contributions to legal publications, and the trust placed in us by both clients and peers. We operate with transparency, compassion, and a relentless focus on protecting your rights and future.
Services
DUI Defense
Criminal Appeals
Domestic Violence Defense
Drug Possession Cases
Felony DUI Reduction
DMV License Suspension Defense
Hit and Run Defense
Weapons Charges
Reckless Driving
Expungement Services
Highlights and features
- We have over 20 years of experience in DUI and criminal defense with a focus on appellate law.
- Our attorneys are recognized as Super Lawyers and lecturers on DUI defense strategies.
- We guarantee personalized representation with a proven track record of case dismissals and reduced charges.
- Our team provides 24/7 availability for urgent legal matters and client consultations.
- We are the only firm in Riverside County awarded 'Super Lawyers' for both DUI and criminal defense.
Associations and certifications
- Super Lawyers
- National College for DUI Defense
- California DUI Lawyers Association
What people say
Best in the business
Compassionate and dedicated
Saved my life professionally
Top-tier appellate skills
Exceeded expectations
Services
DUI Defense
Our DUI defense service specializes in challenging breathalyzer accuracy, procedural errors, and blood test validity. We represent clients facing first-time offenses, felony DUIs, and cases involving bodily injury or commercial licenses. With expertise in California's complex DUI laws, we focus on minimizing penalties, preserving driving privileges, and achieving charge reductions or dismissals through trial or negotiation.
Criminal Appeals
We handle criminal appeals for clients seeking to overturn unjust convictions. Our team specializes in identifying trial court errors, filing writs of mandamus, and presenting compelling arguments before appellate courts. With experience in high-profile cases and amicus briefs before the California Supreme Court, we provide strategic appellate advocacy to protect clients' rights and secure favorable outcomes.
Domestic Violence Defense
Our domestic violence defense service addresses charges involving family members or domestic partners. We challenge evidence credibility, protect clients' reputations, and navigate sensitive legal proceedings. With a balance of assertiveness and compassion, we work to prevent conviction records while addressing underlying issues through appropriate legal channels and alternative sentencing options.
DMV License Defense
We specialize in defending against DMV administrative penalties following DUI arrests. Our services include challenging license suspensions through DMV hearings, filing writs of mandamus, and negotiating restricted driving privileges. With deep knowledge of California's vehicle code requirements, we help clients maintain essential driving rights while resolving underlying criminal charges.
Drug Possession Defense
Our drug possession defense covers simple possession, possession with intent to sell, and DUI drug charges. We challenge unlawful search and seizure practices, laboratory testing procedures, and drug classification evidence. With focus on minimizing incarceration risks and long-term criminal record impacts, we develop tailored defense strategies for both misdemeanor and felony drug offenses.
People
Lara J. Gressley
Attorney
Past President of the California DUI Lawyers Association and two-time President's Award recipient, Lara Gressley is a leading appellate lawyer with expertise in DUI defense and criminal appeals. Admitted to the U.S. Supreme Court, she has worked on landmark DUI cases and serves as faculty for the National College for DUI Defense.
Mike Donaldson
Attorney
Recognized DUI Defense Super Lawyer and National College for DUI Defense-trained expert in blood alcohol testing, Mike Donaldson has secured hundreds of successful DUI verdicts. With U.S. Supreme Court admission and extensive trial experience, he focuses on complex DUI defense, suppression motions, and client-centered advocacy.
Questions
What should I do immediately after a DUI arrest?
Contact Gressley & Donaldson immediately to protect your rights. We'll review your case, advise on DMV deadlines, and begin building your defense strategy to challenge evidence and minimize consequences.
Can a DUI charge be reduced or dismissed?
Yes, through evidence suppression, procedural challenges, or plea negotiations. Our firm has successfully reduced felony DUIs to misdemeanors and secured complete dismissals by challenging testing methods and police procedures.
How does your firm handle out-of-state clients?
We represent clients from initial consultation through court proceedings, handling all communications and court appearances. Our team ensures out-of-state clients receive the same comprehensive defense as local residents.
What differentiates your appellate services?
Our attorneys have worked on major California DUI appellate cases, including People v. Vangelder. We combine deep legal knowledge with strategic brief writing to challenge unjust convictions and set favorable precedents.
Do you handle urgent legal matters?
Yes, we provide 24/7 emergency legal services for DUI arrests and critical court deadlines. Our team ensures immediate response to protect clients' driving privileges and legal rights.
How do you communicate case progress?
We maintain direct communication through phone calls, emails, and secure client portals. Clients receive regular updates on case developments, court dates, and strategic decisions throughout the legal process.
