Atty. William Peter Mahon

Atty. William Peter Mahon

William Peter Mahon is a lawyer practicing criminal law, litigation, personal injury and 2 other areas of law. William received a B.A. degree from Fordham University in 1975, and has been licensed for 46 years.

West Chester West Chester 46 yrs experience 46 year
Call (484) 402-4255 Book Appointment

Profile Summary

About William Peter Mahon at a glance

William Peter Mahon is a Com. Pleas J. based in West Chester, Pennsylvania. They have 46+ years of legal experience, licensed to practice since 1980. Their practice focuses on personal injury, criminal defense, business, zoning, and litigation. Admitted to practice in New York (1980), Ohio (1980), Pennsylvania (1984), and U.S. Supreme Court (1995). Educated at University of Dayton School of Law (J.D., 1979) and Fordham University (B.A., 1975). Serands clients in West Chester, PA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • William Peter Mahon is a lawyer practicing criminal law, litigation, personal injury and 2 other areas of law
  • William received a B.A. degree from Fordham University in 1975, and has been licensed for 46 years
  • William practices in West Chester, PA

Practice Areas Explained

William Peter Mahon's Areas of Practice

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

Personal Injury

Personal injury attorneys help accident victims recover compensation for medical bills, lost wages, and pain & suffering. Most work on contingency — no fee unless you win.

William Peter Mahon is one of 264,852 personal injury attorneys indexed nationally. Browse personal injury attorneys in Pennsylvania →

Criminal Defense

A criminal defense attorney protects your rights from arrest through trial. Find experienced lawyers handling DUI, drug, federal, theft, and violent-crime charges.

William Peter Mahon is one of 214,270 criminal defense attorneys indexed nationally. Browse criminal defense attorneys in Pennsylvania →

Business & Corporate Law

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

William Peter Mahon is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Pennsylvania →

Land Use & Zoning

William Peter Mahon is one of 40,226 zoning attorneys indexed nationally. Browse zoning attorneys in Pennsylvania →

Civil Litigation

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

William Peter Mahon is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in Pennsylvania →

Jurisdictional Context

Why local counsel matters in Pennsylvania

Practicing law in Pennsylvania. Legal matters in Pennsylvania are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in West Chester are typically filed in the local municipal court or the appropriate Pennsylvania state district court, depending on subject matter and amount in controversy. An attorney licensed in Pennsylvania 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 Pennsylvania courts without local counsel or pro hac vice admission.

Looking for additional Pennsylvania attorneys? Browse all attorneys in West Chester or all attorneys in Pennsylvania.

Frequently Asked

Common questions about William Peter Mahon

Where is William Peter Mahon's law office located?
William Peter Mahon's law practice is located in West Chester, Pennsylvania. You can contact the office directly through this profile page.
What practice areas does William Peter Mahon handle?
William Peter Mahon focuses on personal injury, criminal defense, business, zoning, litigation. Each practice area listed reflects experience handling cases of that type in Pennsylvania.
How long has William Peter Mahon practiced law?
William Peter Mahon has 46+ years of legal experience and has been licensed since 1980.
Where did William Peter Mahon go to law school?
William Peter Mahon earned their education at (J.D., 1979); (B.A., 1975).
How can I contact William Peter Mahon for a consultation?
You can contact William Peter Mahon 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.
University of Dayton School of Law
- 1979
B.A.
Fordham University
- 1975

Bar Admissions

New York
Admitted: 1980
Ohio
Admitted: 1980
Pennsylvania
Admitted: 1984
U.S. Supreme Court
Admitted: 1995

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