Atty. Matthew Daniel Williamson
Matthew Daniel Williamson is a lawyer practicing environmental and natural resources, corporate investigations & white collar defense, litigation. Matthew received a B.A. degree from University of California, San Diego in 2003, and has been licensed for 20 years.
Corporate Investigations & White Collar Defense & More Attorney · Serving Costa Mesa, CA · 20+ Years Experience
Profile Summary
About Matthew Daniel Williamson at a Glance
Matthew Daniel Williamson is an Associate, Litigation based in Costa Mesa, California, practicing at Manatt, Phelps & Phillips, LLP. They have 20+ years of legal experience, licensed to practice since 2006. Their practice focuses on white collar, litigation, and environmental. Admitted to practice in California (2006). Educated at University of California, San Diego (B.A., 2003) and University of California, Los Angeles, School of Law J.D. 2006 Chief Articles Editor University of California, Los Angeles, School of Law J.D. Journal of Environmental Law and Policy (—). Active member of Membership Activities Admitted to practice in California, Member, Orange County Bar Association, and Member, American Bar Association. Serves clients in Costa Mesa, CA and the surrounding metropolitan area.
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About Matthew Daniel Williamson
- Matthew Daniel Williamson is a lawyer practicing environmental and natural resources, corporate investigations & white collar defense, litigation
- Matthew received a B.A. degree from University of California, San Diego in 2003, and has been licensed for 20 years
- Matthew practices at Manatt, Phelps & Phillips, LLP in Costa Mesa, CA
Practice Areas Explained
Matthew Daniel Williamson's Areas of Legal Practice
Each practice area below reflects the types of cases Matthew Daniel Williamson handles, with a practical overview of what that area of law involves and how it may apply to your situation in Costa Mesa.
White Collar Crimes in Costa Mesa
Matthew Daniel Williamson is one of 19,824 white collar attorneys indexed nationally. Browse white collar attorneys in California →
Civil Litigation in Costa Mesa
Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.
Matthew Daniel Williamson is one of 450,750 litigation attorneys indexed nationally. Browse litigation attorneys in California →
Environmental Law in Costa Mesa
Environmental attorneys for regulatory compliance, contamination, land use, and natural resource law.
Matthew Daniel Williamson is one of 55,977 environmental attorneys indexed nationally. Browse environmental attorneys in California →
Jurisdictional Context
Why Local Counsel Matters in Costa Mesa
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 Costa Mesa 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.
Costa Mesa Courts and Legal Process
Choosing a Costa Mesa-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 Costa Mesa or all attorneys in California.
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Professional Profile
Why Clients in Costa Mesa Choose Matthew Daniel Williamson
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 Matthew Daniel Williamson's practice in the field of white collar, litigation, and environmental.
Decade-Tested Legal Experience
Matthew Daniel Williamson brings 20+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.
Broad Practice Area Coverage
Covering white collar, litigation, and environmental, Matthew Daniel Williamson can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.
Local Presence in Costa Mesa
A Costa Mesa-based practice means Matthew Daniel Williamson 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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How People Find Matthew Daniel Williamson Online
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Matthew Daniel Williamson's Practice Areas & Specializations
Education & Law School Background
Bar Admissions & Licensed Jurisdictions
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