Atty. Warren Ko
Warren Ko is a lawyer practicing criminal law. Warren received a degree from UC Berkeley SOL Boalt Hall, Berkeley, CA, and has been licensed for 17 years.
Criminal Law Attorney · Serving San Francisco, CA · 17+ Years Experience
Profile Summary
About Warren Ko at a Glance
Warren Ko is a criminal defense attorney based in San Francisco, California. They have 17+ years of legal experience, licensed to practice since 2009. Admitted to practice in California (2009). Educated at UC Berkeley SOL Boalt Hall, Berkeley, CA Stanford Univ, Stanford, CA (—). Serves clients in San Francisco, CA and the surrounding metropolitan area.
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About Warren Ko
- Warren Ko is a lawyer practicing criminal law
- Warren received a degree from UC Berkeley SOL Boalt Hall, Berkeley, CA, and has been licensed for 17 years
- Warren practices in San Francisco, CA
Practice Areas Explained
Warren Ko's Areas of Legal Practice
Each practice area below reflects the types of cases Warren Ko handles, with a practical overview of what that area of law involves and how it may apply to your situation in San Francisco.
Criminal Defense in San Francisco
A criminal defense attorney protects your rights from arrest through trial. Find experienced lawyers handling DUI, drug, federal, theft, and violent-crime charges.
Warren Ko is one of 212,605 criminal defense attorneys indexed nationally. Browse criminal defense attorneys in California →
Jurisdictional Context
Why Local Counsel Matters in San Francisco
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 San Francisco 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 venue, 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.
San Francisco Courts and Legal Process
Choosing a San Francisco-based attorney means your counsel already knows the local docketing timelines, preferred filing formats, and how individual judges typically rule on procedural motions — details that only come from practicing in this jurisdiction day after day. That local familiarity can translate to better strategy, faster filings, and fewer costly surprises.
Looking for additional California attorneys? Browse all attorneys in San Francisco or all attorneys in California.
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Professional Profile
Why Clients in San Francisco Choose Warren Ko
Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish Warren Ko's practice in the field of criminal defense.
Decade-Tested Legal Experience
Warren Ko brings 17+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.
Focused Criminal Defense Practice
Concentrating on criminal defense means Warren Ko's knowledge of relevant statutes, case law, and procedural nuances stays current — unlike generalist practices that spread attention across unrelated fields.
Local Presence in San Francisco
A San Francisco-based practice means Warren Ko attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.
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Warren Ko's Practice Areas & Specializations
Education & Law School Background
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