Atty. John Patrick Mahoney

Atty. John Patrick Mahoney

John P. Mahoney focuses his practice on litigating federal employment law, labor, and national security clearance law cases.

Washington Washington 33 yrs experience 33 year
Call (771) 223-4661 Book Appointment

Profile Summary

About John Patrick Mahoney at a glance

John Patrick Mahoney is a Member based in Washington, District of Columbia, practicing at John P. Mahoney, Esq., Attorney at Law. They have 33+ years of legal experience, licensed to practice since 1993. Their practice focuses on employment, securities, and government. Admitted to practice in Maryland (1993) and District of Columbia (1994). Educated at Catholic University of America, Columbus School of Law (J.D., 1993) and Assumption College B.A. with honors (—). Recognitions include AV Preeminent. Serands clients in Washington, DC and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • John P. Mahoney focuses his practice on litigating federal employment law, labor, and national security clearance law cases
  • He counsels and represents federal employees, contractors, agencies,
  • Read Full Bio

Practice Areas Explained

John Patrick Mahoney's Areas of Practice

Each practice area below reflects the types of cases John Patrick Mahoney 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 Patrick Mahoney is one of 169,120 employment attorneys indexed nationally. Browse employment attorneys in District of Columbia →

Securities Law

John Patrick Mahoney is one of 64,529 securities attorneys indexed nationally. Browse securities attorneys in District of Columbia →

Government & Administrative Law

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

John Patrick Mahoney is one of 132,225 government attorneys indexed nationally. Browse government attorneys in District of Columbia →

Jurisdictional Context

Why local counsel matters in District of Columbia

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

Looking for additional District of Columbia attorneys? Browse all attorneys in Washington or all attorneys in District of Columbia.

Frequently Asked

Common questions about John Patrick Mahoney

Where is John Patrick Mahoney's law office located?
John Patrick Mahoney's law practice is located in Washington, District of Columbia. The firm is John P. Mahoney, Esq., Attorney at Law. You can contact the office directly through this profile page.
What practice areas does John Patrick Mahoney handle?
John Patrick Mahoney focuses on employment, securities, government. Each practice area listed reflects experience handling cases of that type in District of Columbia.
How long has John Patrick Mahoney practiced law?
John Patrick Mahoney has 33+ years of legal experience and has been licensed since 1993.
Where did John Patrick Mahoney go to law school?
John Patrick Mahoney earned their education at (J.D., 1993); (—).
How can I contact John Patrick Mahoney for a consultation?
You can contact John Patrick Mahoney 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 Patrick Mahoney received?
John Patrick Mahoney's notable recognition includes: AV Preeminent.

Education

J.D.
Catholic University of America, Columbus School of Law
- 1993
Assumption College B.A. with honors
- In Progress

Awards

AV Preeminent

Bar Admissions

Maryland
Admitted: 1993
District of Columbia
Admitted: 1994

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