Atty. John William McGuinness

Atty. John William McGuinness

John William McGuinness is a lawyer practicing class actions, consumer financial services, consumer protection and 5 other areas of law. John received a B.A. degree from New York University in 1995, and has been licensed for 26 years.

Los Angeles Los Angeles 26 yrs experience 26 year
Call (424) 483-5859 Book Appointment

Profile Summary

About John William McGuinness at a glance

John William McGuinness is a Partner, Litigation based in Los Angeles, California, practicing at Manatt Phelps And Phillips Llp. They have 26+ years of legal experience, licensed to practice since 2000. Their practice focuses on business, class action, litigation, consumer, and government. Admitted to practice in New York (2000), District of Columbia (2008), and California Northern and Central Districts of California U.S. District Court, Eastern District of New (2011). Educated at New York University (J.D., 1999) and New York University (B.A., 1995). Active member of Membership Activities Admitted to practice in the states of California, New York and the District of Columbia, Admitted to practice before the U, and S. Serands clients in Los Angeles, CA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • John William McGuinness is a lawyer practicing class actions, consumer financial services, consumer protection and 5 other areas of law
  • John received a B.A. degree from New York University in 1995, and has been licensed for 26 years
  • John practices at Manatt, Phelps & Phillips, LLP in Los Angeles, CA

Practice Areas Explained

John William McGuinness's Areas of Practice

Each practice area below reflects the types of cases John William McGuinness handles, with a brief overview of what that area of law covers.

Business & Corporate Law

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

John William McGuinness is one of 501,317 business attorneys indexed nationally. Browse business attorneys in California →

Class Action

John William McGuinness is one of 26,424 class action attorneys indexed nationally. Browse class action attorneys in California →

Civil Litigation

Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.

John William McGuinness is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in California →

Consumer Protection

Consumer protection attorneys for fraud, lemon law, debt harassment, and deceptive trade practices.

John William McGuinness is one of 50,607 consumer attorneys indexed nationally. Browse consumer attorneys in California →

Government & Administrative Law

Attorneys for administrative law, agency hearings, government contracts, licensing, and public benefits.

John William McGuinness is one of 132,225 government attorneys indexed nationally. Browse government 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 Los Angeles 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 Los Angeles or all attorneys in California.

Frequently Asked

Common questions about John William McGuinness

Where is John William McGuinness's law office located?
John William McGuinness's law practice is located in Los Angeles, California. The firm is Manatt Phelps And Phillips Llp. You can contact the office directly through this profile page.
What practice areas does John William McGuinness handle?
John William McGuinness focuses on business, class action, litigation, consumer, government. Each practice area listed reflects experience handling cases of that type in California.
How long has John William McGuinness practiced law?
John William McGuinness has 26+ years of legal experience and has been licensed since 2000.
Where did John William McGuinness go to law school?
John William McGuinness earned their education at (J.D., 1999); (B.A., 1995).
How can I contact John William McGuinness for a consultation?
You can contact John William McGuinness directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.

Education

J.D.
New York University
- 1999
B.A.
New York University
- 1995

Bar Admissions

New York
Admitted: 2000
District of Columbia
Admitted: 2008
California Northern and Central Districts of California U.S. District Court, Eastern District of New
Admitted: 2011

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