Atty. William J. Duffy
William J. Duffy V is a leading criminal defense attorney in Orange County, California, with a strong focus on DUI defense and domestic violence cases.
Profile Summary
About William J. Duffy at a glance
William J. Duffy is a Member based in Irvine, California, practicing at Duffy Law, PC. They have 19+ years of legal experience, licensed to practice since 2007. Their practice focuses on dui/dwi, criminal defense, dv defense, and litigation. Admitted to practice in California (2007). Educated at Western State College of Law (J.D., 2005) and University of Montana Communications (—). Serands clients in Irvine, CA and the surrounding metropolitan area.
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About
- William J. Duffy V is a leading criminal defense attorney in Orange County, California, with a strong focus on DUI defense and domestic violence cases
- As a former Certified Law Clerk for the Los Angeles County District Attorney, Mr. Duffy brings unique insight into how prosecutors handle criminal charges, giving his clients a strategic advantage
- As the managing partner of Duffy Law’s Irvine office, Mr. Duffy leverages extensive trial experience gained both locally and with other top Southern California law firms
- He is dedicated exclusively to defending those facing criminal allegations in Orange County, handling every stage — from investigations and pre-trial motions to courtroom litigation
- Clients trust Bill Duffy for his aggressive defense strategies, deep knowledge of California criminal law, and personal commitment to achieving favorable outcomes for DUI, domestic violence, and all other criminal cases
- If you’re looking for a skilled Orange County criminal defense lawyer who understands your individual situation and fights to protect your rights, contact William J. Duffy V at Duffy Law to get the experienced legal representation you deserve
Practice Areas Explained
William J. Duffy's Areas of Practice
Each practice area below reflects the types of cases William J. Duffy handles, with a brief overview of what that area of law covers.
Find experienced DUI and DWI defense attorneys near you. Compare verified profiles, read client reviews, and consult about your case for free.
William J. Duffy is one of 29,976 dui/dwi attorneys indexed nationally. Browse dui/dwi attorneys in California →
A criminal defense attorney protects your rights from arrest through trial. Find experienced lawyers handling DUI, drug, federal, theft, and violent-crime charges.
William J. Duffy is one of 214,270 criminal defense attorneys indexed nationally. Browse criminal defense attorneys in California →
William J. Duffy is one of 12,315 dv defense attorneys indexed nationally. Browse dv defense attorneys in California →
Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.
William J. Duffy is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in California →
Jurisdictional Context
Why local counsel matters in California
Practicing law in California. Legal matters in California are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Irvine are typically filed in the local municipal court or the appropriate California state district court, depending on subject matter and amount in controversy. An attorney licensed in California brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in California courts without local counsel or pro hac vice admission.
Looking for additional California attorneys? Browse all attorneys in Irvine or all attorneys in California.
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