Services

Orange County DUI Defense

DUI charges are among the most common criminal cases in Orange County. If you’re facing DUI, having an experienced attorney on your side can make a big difference

Domestic Battery / Spousal Abuse

We specialize in pre-filing dismissals and modifying protective orders. Don’t let a single dispute redefine your family life.

Theft & Drug Crimes

Aggressive representation for possession, sales, and theft charges. We prioritize rehabilitation and getting your life back on track.

Trial Advocacy

Strong trial advocacy is essential when your freedom and future are on the line. We prepare every case with precision and present clear, persuasive arguments designed to protect your rights in court.

Victim’s Rights Advocacy

Victims deserve a voice throughout the legal process. We advocate for victims’ rights with care and determination, helping ensure they are informed, protected, and treated with respect at every stage.

Rehabilitation & Restoration of Rights

A criminal conviction does not have to limit your future. We help clients pursue rehabilitation and the restoration of rights through legally available options that support a fresh start and long-term stability.

Post Conviction

A past conviction does not have to define your future. We help clients pursue post-conviction relief options such as record expungement, sentence modification, and other legal remedies designed to move life forward.

Sexual Assault

Sexual assault allegations are serious and can have life-changing consequences if not handled correctly. We provide strategic, confidential defense focused on protecting your rights and guiding you through every step of the legal process.

Penal Codes / Statuses

Understanding how California penal codes and statutes apply to your case is critical to building a strong defense. We break down complex laws into clear strategies tailored to your specific charges and circumstances.

Courts We Serve

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.

Orange County

Harbor Justice Center 4601 Jamboree Road, Newport Beach
West Justice Center 8141 13th Street, Westminster
Central Justice Center 700 Civic Center Drive W., Santa Ana
North Justice Center 1275 N. Berkeley, Fullerton

Serving Irvine, Newport Beach, Costa Mesa, and all OC communities.

Regional Defense

Extending elite legal defense to surrounding Southern California jurisdictions:

Los Angeles County Riverside County San Bernardino County

"Wherever your case is filed, my knowledge of local procedures allows me to position your case for the best possible outcome."

Frequently Asked Questions

With over 20 years of experience and a proven track record in Orange County courts, William J. Duffy provides clear answers and relentless advocacy for those facing criminal and DUI charges.

Talk to Our Attorneys

Get in touch with our legal experts today.

We are a premier criminal defense firm based in Orange County. We specialize in DUI defense, domestic battery, sexual assault allegations, theft, and drug crimes. Additionally, we provide dedicated advocacy for Victim’s Rights (Marsy’s Law) and help clients move forward through post-conviction relief and the restoration of rights.

Yes. We understand that facing legal charges is a high-stakes situation. We offer an initial consultation to discuss the specifics of your case, evaluate your options, and explain how our "relentless advocacy" approach can help protect your future.

ou can book an appointment by calling our Irvine office directly at (949) 620-3308, emailing info@willduffy.law, or messaging us via WhatsApp. Because we are in court defending clients most mornings, we offer flexible scheduling via Zoom during afternoons, evenings, and weekends to accommodate your schedule.

It comes down to experience and purpose. William J. Duffy brings over 18 years of experience, including a background with the L.A. County District Attorney’s office and a record of winning acquittals for his first nine consecutive jury trial clients. We combine seasoned trial expertise with a faith-based commitment to justice and redemption.

You can easily schedule an appointment through our website or by contacting our office directly.

Our personalized approach, proven track record, and dedicated team of attorneys set us apart.

Our main office is located in the Irvine Spectrum area:

100 Spectrum Center Drive, Suite 900, Irvine, CA 92618. While our physical office is in Irvine, we represent clients throughout Orange County and Southern California.

What Our Valued Clients Say About Us

We take pride in delivering justice with integrity, dedication, and trusted legal expertise. Our clients’ voices reflect the true strength of our firm