Atty. John J. Duffy

Atty. John J. Duffy

John Duffy, co-founder of Gray•Duffy, LLP, has a practice which covers a broad spectrum of civil litigation matters, including insurance, construction defect, education, medical and legal malpractice, and employment law. He has extensive trial and litigation experience, representing clients in more than 50 jury trials, and in hundreds of hearings and arbitrations.

Woodland Hills Woodland Hills 46 yrs experience 46 year
Call (747) 250-8294 Email Book Appointment

Profile Summary

About John J. Duffy at a glance

John J. Duffy is a Partner based in Woodland Hills, California, practicing at Grayduffy Llp. They have 46+ years of legal experience, licensed to practice since 1980. Their practice focuses on employment, construction, education, and insurance. Admitted to practice in California (1980), New Jersey (1982), and U.S. District Court, District of New Jersey United States District Court, Central District of Califo (1982). Educated at Southwestern University (J.D., 1979) and University of Notre Dame (B.A., 1973). Recognitions include AV Preeminent. Active member of San Fernando Valley Bar Association, Los Angeles County Bar Association, State Bar of California, Association of Southern California Defense Counsel. Serands clients in Woodland Hills, CA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • John Duffy, co-founder of Gray•Duffy, LLP, has a practice which covers a broad spectrum of civil litigation matters, including insurance, construction defect, education, medical and legal malpractice, and employment law
  • He has extensive trial and litigation experience, representing clients in more than 50 jury trials, and in hundreds of hearings and arbitrations
  • Mr. Duffy also serves as a mediator assisting parties in privately resolving their disputes
  • Most recently, Mr. Duffy has successfully defended business owners, property owners and individuals in various civil lawsuits in State and Federal Court arising out of serious personal injuries and property damage claims
  • As a former high school teacher, he also has unique familiarity with education law, having previously represented the Los Angeles Unified School District as well as numerous private schools
  • Mr. Duffy obtained his Juris Doctorate from Southwestern University School of Law in Los Angeles and received his undergraduate degree from the University of Notre Dame completing a double major in Political Science and Economics
  • While attending law school, he received practical trial experience with the Los Angeles County District Attorney's office trying cases
  • Prior to attending law school, Mr. Duffy served in the U.S
  • Army
  • He is also a native of New Jersey
  • He is admitted to practice law in California and was previously admitted in New Jersey
  • He is also admitted to the United States District Court, Central District of California and the U.S
  • District Court for the District of New Jersey
  • Mr. Duffy teaches Insurance Law at Ventura College of Law
  • Mr. Duffy conducts mediations and arbitrations for the Los Angeles Superior Court, and serves as a Judge Pro Tem in the Los Angeles Superior Court
  • He regularly participates on industry panels and speaks on subjects including risk management and other insurance litigation topics

Practice Areas Explained

John J. Duffy's Areas of Practice

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

Employment Law

Employment lawyers represent workers in wrongful termination, discrimination, harassment, wage & hour disputes, and severance negotiations.

John J. Duffy is one of 169,120 employment attorneys indexed nationally. Browse employment attorneys in California →

Construction Law

John J. Duffy is one of 40,689 construction attorneys indexed nationally. Browse construction attorneys in California →

Education Law

Education attorneys for special education (IEP), school discipline, Title IX, and student rights.

John J. Duffy is one of 24,079 education attorneys indexed nationally. Browse education attorneys in California →

Insurance Law

Insurance attorneys for coverage disputes, bad faith claims, denied claims, and policy disputes.

John J. Duffy is one of 121,912 insurance attorneys indexed nationally. Browse insurance 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 Woodland Hills 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 Woodland Hills or all attorneys in California.

Frequently Asked

Common questions about John J. Duffy

Where is John J. Duffy's law office located?
John J. Duffy's law practice is located in Woodland Hills, California. The firm is Grayduffy Llp. You can contact the office directly through this profile page.
What practice areas does John J. Duffy handle?
John J. Duffy focuses on employment, construction, education, insurance. Each practice area listed reflects experience handling cases of that type in California.
How long has John J. Duffy practiced law?
John J. Duffy has 46+ years of legal experience and has been licensed since 1980.
Where did John J. Duffy go to law school?
John J. Duffy earned their education at (J.D., 1979); (B.A., 1973).
How can I contact John J. Duffy for a consultation?
You can contact John J. Duffy 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.
What awards or recognition has John J. Duffy received?
John J. Duffy's notable recognition includes: AV Preeminent.

Education

J.D.
Southwestern University
- 1979
B.A.
University of Notre Dame
- 1973

Awards

AV Preeminent

Bar Admissions

California
Admitted: 1980
New Jersey
Admitted: 1982
U.S. District Court, District of New Jersey United States District Court, Central District of Califo
Admitted: 1982

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