Criminal Defense Attorney Southern California — Poseidon Defense A.P.C.
State and Federal Criminal Defense Available for You 24/7
Criminal Defense Attorney Serving Orange County, Los Angeles, San Diego, Riverside, San Bernardino & Kern Counties
Premier Lawyer — Verified
Geronimo Gutierrez IV
2027 Southern California Rising Stars | Top 2.5%
Aggressive Defense Across All Criminal Charges
From misdemeanors to federal felonies, Poseidon Defense A.P.C. provides strategic, experienced representation for every type of criminal charge in Southern California.
Available 24/7
Free Consultations
About Geronimo Gutierrez IV
Founder and Chief Counsel, Geronimo Gutierrez IV, is an experienced attorney specializing in state and federal criminal defense throughout Southern California. He brings aggressive, knowledgeable representation to every client — treating each case with the dedication it deserves.
Chief Counsel
Poseidon Defense A.P.C.
Jan 2025 – Present · Fullerton, California
Defends clients against misdemeanor and felony matters, both state and federal. Admitted to the Central, Eastern, and Southern federal districts of California.
Deputy Public Defender
Los Angeles County Public Defender
Jan 2024 – Apr 2024 · Downtown Los Angeles
Defended indigent clients in felony state cases. Cases included assault with deadly weapon, great bodily injury, drug possession, and assault on peace officers.
Criminal Defense Attorney
The Matian Firm
Apr 2021 – Jan 2024 · Los Angeles, California
Defended clients against misdemeanor and felony matters, both state and federal. Admitted to the Central, Eastern, and Southern federal districts of California.
Senior Legal Intern
Huston McCaffrey LLP
Jun 2019 – Mar 2021 · San Diego, California
Senior Legal Intern handling criminal defense matters.
Legal Intern
San Diego County Office of The Public Defender — Multiple Conflicts Office, Major Cases
Aug 2019 – Nov 2019 · Greater San Diego Area
Homicide and Special Circumstances issues.
Certified Legal Intern
County of San Diego Office of the Public Defender — Primary Public Defender
Jan 2019 – Apr 2019 · San Diego, California
The Poseidon Defense Difference
When your freedom is on the line, you deserve an attorney who fights as hard as the prosecution. Here's what sets us apart.
Strategic Defense Planning
Every case receives a customized defense strategy built around your specific facts, charges, and goals.
Direct Attorney Access
You work directly with Geronimo Gutierrez IV — not a paralegal or junior associate.
Courtroom Experience
Proven trial experience in California Superior Courts and Federal District Courts.
State & Federal Representation
Admitted to practice in both California state courts and federal courts in the Central and Southern Districts.
Fast Response Times
Criminal charges move fast. We respond quickly so your defense starts immediately.
Free Confidential Consultations
Speak with an attorney at no cost. Everything you share is protected by attorney-client privilege.
What Our Clients Say
Serving Clients Across Southern California
Poseidon Defense A.P.C. represents clients facing state and federal criminal charges in Los Angeles County, Orange County, San Diego County, Riverside County, San Bernardino County, and Kern County. Whether you're facing charges in California Superior or Federal Court, we provide aggressive criminal defense representation throughout Southern California.
Frequently Asked Questions
Get Your Free Case Analysis
Your future is too important to leave to chance. Contact Poseidon Defense A.P.C. now for a free confidential consultation. Everything you share is protected by attorney-client privilege.
Call or Text
(657) 255-6455
Office Address
1440 North Harbor Boulevard #260
Fullerton, California 92835
Availability
Call or Text 24/7 — Walk-ins Welcome!
Send My Free Case Analysis
Get Experienced Criminal Defense Today
Your future is too important to leave to chance. Contact Poseidon Defense A.P.C. now for a free confidential consultation.