DUFFY LAW, A Professional Corporation
From the Spectrum in Irvine to the shores of Newport Beach, William J. Duffy is the “OC Guy” you want in your corner. With over 20 years of experience and a track record of early jury trial acquittals, we provide a steadfast defense fueled by faith, integrity, and a deep commitment to our local community.
William J. Duffy hasn’t just studied the law—he’s lived it in the trenches of Southern California’s courtrooms.
He started out defending people in San Bernardino and Riverside Counties, standing next to clients who were often facing the toughest moments of their lives.
Those early years in the trial courts, combined with his work in the L.A. County District Attorney’s Justice System Integrity Division, gave him a front-row seat to how the justice system really works. That perspective shaped the way he practices today: practical, steady, and focused on real people and real results.
Skilled lawyers with years of proven success.
Always available to guide and protect your rights.
Managing Attorney
We stand beside people in some of the hardest moments of their lives, offering clear guidance, strong advocacy, and a track record of real results for both victims and those accused or suspected of criminal wrongdoing.
Orange County DUI Defense
Facing a DUI in Irvine or Newport Beach? From DMV APS hearings to complex court litigation, we fight to protect your license and your future.
Domestic Violence & Spousal Battery
We specialize in pre-filing dismissals and modifying protective orders. Don’t let a single dispute redefine your family life.
Relentless Trial Advocacy
With over 20 jury trials, we don't back down. We provide seasoned expertise and a heartfelt commitment to your defense in court.
Post-Conviction Relief
Clean up your criminal record. We help with expungements and reducing felonies to misdemeanors to restore your rights.
Victim’s Rights Advocacy
We stand by victims of crime to ensure their voices are heard and they receive the restitution they deserve under Marsy's Law.
Theft & Drug Crimes
Aggressive representation for possession, sales, and theft charges. We prioritize rehabilitation and getting your life back on track.
Every case tells a story. From inception of case through jury trial, if necessary, our dedicated team has secured outstanding results for clients facing criminal charges.
Expert legal representation for domestic violence charges, spousal abuse allegations, and battery defense. We provide aggressive advocacy to protect your rights, minimize penalties, and safeguard your future.
Discreet and rigorous defense against sexual assault allegations, felony sex crimes, and misconduct charges. Our experienced criminal defense attorneys fight to ensure a fair trial and protect your reputation.
Our attorneys bring years of expertise across diverse areas of law, ensuring every client receives the best legal representation.
Founder & Managing Attorney Lead Trial Counsel – Criminal & DUI Defense
Specialist – Family & Divorce Law
Criminal Defense & Civil Litigation Expert
Banking & Finance Law Specialist
Employment & Labor Law Advisor
I appear regularly in the local courts where your case will actually be decided. My familiarity with judges, prosecutors, and court staff allows me to navigate the system smoothly while avoiding rookie pitfalls.
Serving Irvine, Newport Beach, Costa Mesa, and all OC communities.
Extending elite legal defense to surrounding Southern California jurisdictions:
"Wherever your case is filed, my knowledge of local procedures allows me to position your case for the best possible outcome."
Read honest client reviews and success stories from individuals we’ve represented in criminal defense and litigation cases. We take pride in delivering justice with integrity, dedication, and trusted legal expertise. Our clients’ voices reflect the true strength of our firm and our commitment to achieving the best possible legal outcomes.
Navigating the criminal justice system in Orange County can be overwhelming. We’ve compiled answers to the most common questions our clients ask during their first consultation. If you don’t find the answer you need here, call our Irvine office at (949) 620-3308 for a confidential case evaluation.
Get in touch with our legal experts today.
Do not make any statements to law enforcement. Clearly state that you wish to remain silent and want an attorney present. Contact us immediately so we can protect your rights from the very first hour.
Yes. For DUI cases, you only have 10 days from your arrest to request a hearing with the California DMV to save your license. We handle the paperwork and the hearing for you.
In most misdemeanor cases, we can appear on your behalf under Penal Code 977, so you don't have to miss work. For felonies, your presence is typically required unless we've secured a specific excusal.
We offer transparent, flat-fee pricing for most criminal matters and arrange flexible payment plans. We accept all major credit cards and provide a realistic cost estimate during your initial consultation.
You can easily schedule an appointment through our website or by contacting our office directly.
William J. Duffy is a former public defender with over 18 years of local experience and more than 20 jury trials. We offer a "client-first" approach, combining relentless trial advocacy with a focus on rehabilitation and second chances.
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