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Geronimo Gutierrez IV
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About Geronimo
Biography
With substantial experience in both state and federal criminal defense, Geronimo Gutierrez IV is known for his effective advocacy and track record of successfully representing clients facing felony and misdemeanor charges across Orange County and Los Angeles County. His legal practice encompasses a variety of cases, such as DUI, drug-related offenses, assault, burglary, and more complex matters like criminal RICO. Mr. Gutierrez enhances his defense strategies with experience gained as Deputy Public Defender in Los Angeles and as an associate at The Matian Firm, APC, where he managed cases in several federal districts. Early roles as a legal intern in prominent San Diego legal offices allowed him to hone research, motion drafting, and client services skills. Recognized for his academic and professional achievements, including the Jefferson Medal from Thomas Jefferson School of Law and multiple honors from Fullerton College, Mr. Gutierrez stands out for his dedication, resourcefulness, and thorough understanding of the criminal justice system. He approaches each case with a commitment to achieving the best possible outcome for his clients.
As a seasoned felony and misdemeanor criminal defense attorney, Mr. Gutierrez has successfully represented individuals facing a wide spectrum of charges—from first-time DUI and domestic violence allegations to complex felony prosecutions and federal indictments.
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Practice Areas
3
Practice Areas
Criminal Defense
45%
5 years
DUI and DWI
45%
5 years
Federal Crime
10%
5 years
Fees and Rates
Cost
Payment Methods
- Cash
- Check
- Credit Card
Awards
2026 2025
Licenses
Licensed in California for 5 years
State: California
Acquired: 2021
No misconduct found
Location
Poseidon Defense APC
(714) 978-4732
Mobile
1440 N. Harbor Blvd., #260, Fullerton, CA, 92835
poseidondefenselaw.com/Gallery
Online Presence
Other places you can find Geronimo online.
Geronimo Gutierrez IV's Reviews
Avvo Review Score
44 Client Reviews
Filter Avvo Reviews (44)
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Practice Areas
Showing 31 - 35 of 44 reviews | 5 stars
Posted by anonymous | November 10, 2025
Patient
He was extremely detailed in what i needed to do and took the time to explain the situation with patience
Geronimo Gutierrez
Replied last November 11, 2025Thank you!
Posted by anonymous | November 08, 2025
Someone you can trust
Very helpful and informative! I definitely recommend for anyone considering a consultation.
Geronimo Gutierrez
Replied last November 09, 2025Thank you!
Posted by anonymous | November 06, 2025
Reliable
He was very informative. He Helped me out a lot and was a great person overall
Geronimo Gutierrez
Replied last November 06, 2025Thank you!
Posted by Joan stephanie Vasquez | November 06, 2025 | Hired Attorney
Mr.Gutierrez is a wonderful attorney .
Attorney Gutierrez is a wonderful attorney. He is the most professional attorney my family and I have worked with . He helped explain the legal process and helped with our legal matter and was very patient with all of our questions. We never had an issue with communication. Me.Gutierrez, was very at...
Geronimo Gutierrez
Replied last November 06, 2025Thank you!
Posted by Mikey | November 06, 2025 | Criminal Defense
Great strategist.
Calm. Cool. Collected. I had the privilege of working with Geronimo for my criminal case, and I can confidently say he is one of the best in his field. He handles both state and federal criminal defense matters with exceptional skill, professionalism, and dedication. From the very beginning, ...
Geronimo Gutierrez
Replied last November 06, 2025Thank you!
Geronimo Gutierrez IV's Lawyer Endorsements
"The first time I met Mr. Gutierrez was at court a few years back. We were working together on a case, and he was able to convince the District Attorney to reconsider their previous offer of a felony and significant jail time, to no jail time and a misdemeanor. What stood out more than the outcome, however, was how Mr. Gutierrez spoke with his client. He was calm, respectful, and took the time to explain exactly what was happening. Since then I have observed Mr. Gutierrez handle a variety of matters in court. Each time, what stands out the most, is the way he interacts with his clients. In any case, but especially a criminal one, having the right attorney can make all the difference. And no matter the outcome, you want an attorney who is by your side and keeps you informed, like Mr. Gutierrez."
"Geronimo is an excellent litigator. He is hardworking and knowledgeable. A great attorney to have in your corner. I highly endorse Mr. Gutierrez IV."
"Mr. Gutierrez is diligent, dedicated and compassionate. He is goes above and beyond for his clients. I am proud to endorse this lawyer. His clients are lucky to have him."
"Geronimo is an excellent criminal defense attorney. He is compassionate and knowledgeable. A great attorney to have in your corner."
"Geronimo is an exceptional criminal defense attorney who brings both sharp legal insight and unwavering dedication to every case. His attention to detail, courtroom presence, and commitment to his clients set him apart. He is highly respected within the legal community and a true advocate for those he represents"
"Attorney Gutierrez IV is a thoughtful, engaged, and genuinely kind person. He brings professionalism, intellect, and good humor to every conversation. I have no doubt he is a valued advocate to his clients."
"I endorse this lawyer. He is a great attorney and a great person to have by your side. Geronimo will do all he can to get that win for you."
"Geronimo is very bright and dedicated to fight for his clients to achieve maximum results!"
"I would strongly recommend Geronimo and his Law Firm to anybody looking for a lawyer."
"Mr. Gutierrez is an incredibly thorough and ethical attorney and I am very pleased to endorse him. We worked together at a previous firm and I have been impressed by him since then. He works hard and will represent you in court to the best of his ability."
"I had the privilege of working alongside attorney Geronimo Gutierrez IV in downtown Los Angeles, and I highly recommend him. Your outcome in a criminal case depends greatly on someone who will: (1) challenge the evidence, (2) dig in, and (3) fight alongside you. Geronimo Gutierrez IV is that kind of lawyer. Whether you have been wrongly accused, grossly overcharged, or if you simply need someone to present "factors in mitigation" and inform the District Attorney's Office about the totality of the circumstances, Geronimo is the right lawyer for you. What's more, he is fluent in English and Spanish -- something that can make a real difference for so many families. I recommend him without hesitation."
"I had the privilege of working alongside Geronimo, and I can confidently say they are an exceptional criminal defense attorney. Their dedication, sharp legal mind, and unwavering commitment to their clients set them apart. Geronimo fights tirelessly for justice, providing skilled and strategic defense in even the toughest cases. I highly recommend them to anyone in need of a top-notch advocate."
Adam Klugman
Criminal defense lawyer
Gil Peles
Litigation lawyer
Norman Hasso
Criminal defense lawyer
Ray Dinari
Criminal defense lawyer
Joel Garcia
Criminal defense lawyer
Christopher Miller
Criminal defense lawyer
Michelle Silva
Criminal defense lawyer
Shawn Huston
Criminal defense lawyer
Angelo Reyes
Criminal defense lawyer
Charles Farris
Criminal defense lawyer
Experience
Honors
2025
American Government: Constitutional Foundations, HarvardX
2019
Jefferson Medal, Issued by Thomas Jefferson School of Law
2012
Dean's Honor List, Issued by Fullerton College
2012
Nominated Man of Distinction, Issued by Fullerton College
Work Experience
2025 - Present
Chief Counsel, Poseidon Defense A.P.C.
2024 - 2024
Deputy Public Defender, Los Angeles County Public Defender
2021 - 2024
Criminal Defense Attorney, The Matian Firm, APC
2019 - 2019
Certified Legal Intern, San Diego Public Defender, Primary Public Defender
2019 - 2019
Law Clerk, San Diego Public Defender, Multiple Conflicts Office
2019 - 2021
Senior Legal Intern, Huston | McCaffrey, LLP
Associations
2025 - Present
Orange County Bar AssociationAttorney Member
2023 - Present
North Orange County Bar AssociationAttorney Member
2023 - Present
Admission to United States Eastern District Court of CaliforniaAttorney
2022 - Present
Admission to United States Southern District Court of CaliforniaAttorney
2022 - Present
Admission to United States District Court - Central District of CaliforniaAttorney
2020 - Present
Los Angeles County Bar AssociationAttorney Member
Sample of Legal Cases
Petty Theft Diversion Granted
Dismissed and Sealed
Avoided Mandatory Penal Code 290 Registration
Education
2020
Thomas Jefferson School of Law
JD - Juris Doctor
2017
California State University, Fullerton
BA - Bachelor of Arts - Political Science
2013
Fullerton College
Associate of Arts - Political Science
Speaking Engagements
2026
Business Madness, hosted by the California State University, Fullerton (CSUF) Business Inter-Club Council
Business Law
2025
Coffee and Case Law
California State University, Fullerton - Business Legal Studies Association
Publications
2026
Self Published
Burglary Tools Lawyer (PC 466) — Los Angeles & Orange County
2026
2025
DUI Checkpoints in California: Legality and Defense Strategies
DUI Checkpoints in California: Legality and Defense Strategies
2025
Self Published
Romero Motion – How to Strike a Strike in California
2025
Self Published
What to Expect at the Clara Shortridge Foltz (CCB)
Languages
Spanish
English
Activity
Legal Answers
Legal Guides
Legal Answers
Q&A
I got issued a court date after i moved from CA to FL im in florida and im expected to get a warrant
20 Nov 2025
Q&A
3rd DUI in California, what should I expect.
18 Nov 2025
Q&A
What motions should I file and what could possibly happen for the!
21 Nov 2025
Legal Guides
Legal Guide
False Reports, Resisting Arrest, and Obstruction of Justice in CA
29 Nov 2025
Legal Guide
Receiving Stolen Property in California: PC 496 Explained
29 Nov 2025
Legal Guide
Failure to Appear and Contempt of Court in California: PC 1320
29 Nov 2025