Atty. William Castillo Guardado
William Castillo Guardado is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Antitrust and Mass Tort Litigation / Class Actions - Plaintiffs. William, who practices law in San Francisco, California, has been recognized since 2026.
Profile Summary
About William Castillo Guardado at a glance
William Castillo Guardado is a class action, product liability, and litigation attorney based in San Francisco, California, practicing at Saveri Law Firm LLP. They have 13+ years of legal experience, licensed to practice since 2013. Admitted to practice in California, The State Bar of California (2013). Educated at University of California Hastings College of the Law (J.D., 2013). Recognitions include Best Lawyers in America — Litigation - Antitrust (2026) and Best Lawyers in America — Mass Tort Litigation / Class Actions - Plaintiffs (2026). Serands clients in San Francisco, CA and the surrounding metropolitan area.
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About
- William Castillo Guardado is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Antitrust and Mass Tort Litigation / Class Actions - Plaintiffs
- William, who practices law in San Francisco, California, has been recognized since 2026
- This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which William is held by other top lawyers in the same geographic and legal practice area
Practice Areas Explained
William Castillo Guardado's Areas of Practice
Each practice area below reflects the types of cases William Castillo Guardado handles, with a brief overview of what that area of law covers.
William Castillo Guardado is one of 26,424 class action attorneys indexed nationally. Browse class action attorneys in California →
William Castillo Guardado is one of 66,193 product liability attorneys indexed nationally. Browse product liability attorneys in California →
Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.
William Castillo Guardado 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 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 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 San Francisco or all attorneys in California.
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