Atty. John Matthew Williamson

Atty. John Matthew Williamson

Mr. John Matthew Williamson is a lawyer practicing patents, patent litigation, trade secrets and 6 other areas of law.

Washington Washington 26 J. Erfahrung 26 year
Call (202) 770-4377 Book Appointment

Profile Summary

About John Matthew Williamson at a glance

John Matthew Williamson is a Partner based in Washington, District of Columbia, practicing at Finnegan Henderson Farabow Garrett And Dunner L L P. They have 26+ years of legal experience, licensed to practice since 2000. Their practice focuses on patent, family law, trade secrets, government, and entertainment. Admitted to practice in Colorado (2000) and District of Columbia registered to practice before U.S. Patent and Trademark Office (2001). Educated at University of Colorado (J.D. Economics, 2000) and University of Colorado (B.A. Economics, 1997). Serands clients in Washington, DC and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

Über uns

  • Mr. John Matthew Williamson is a lawyer practicing patents, patent litigation, trade secrets and 6 other areas of law
  • John received a B.A. degree from University of Colorado in 1997, and has been licensed for 26 years
  • John practices at Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P. in Washington, DC

Practice Areas Explained

John Matthew Williamson's Areas of Practice

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

Patent Law

John Matthew Williamson is one of 20,749 patent attorneys indexed nationally. Browse patent attorneys in District of Columbia →

Family Law

Family law attorneys handle divorce, child custody, child support, adoption, prenups, and protective orders. Find verified family lawyers near you.

John Matthew Williamson is one of 187,066 family law attorneys indexed nationally. Browse family law attorneys in District of Columbia →

Trade Secrets

John Matthew Williamson is one of 6,644 trade secrets attorneys indexed nationally. Browse trade secrets attorneys in District of Columbia →

Government & Administrative Law

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

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

Entertainment & Sports Law

Entertainment lawyers for music, film, sports contracts, talent representation, and IP licensing.

John Matthew Williamson is one of 45,946 entertainment attorneys indexed nationally. Browse entertainment 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 Matthew Williamson

Where is John Matthew Williamson's law office located?
John Matthew Williamson's law practice is located in Washington, District of Columbia. The firm is Finnegan Henderson Farabow Garrett And Dunner L L P. You can contact the office directly through this profile page.
What practice areas does John Matthew Williamson handle?
John Matthew Williamson focuses on patent, family law, trade secrets, government, entertainment. Each practice area listed reflects experience handling cases of that type in District of Columbia.
How long has John Matthew Williamson practiced law?
John Matthew Williamson has 26+ years of legal experience and has been licensed since 2000.
Where did John Matthew Williamson go to law school?
John Matthew Williamson earned their education at (J.D. Economics, 2000); (B.A. Economics, 1997).
How can I contact John Matthew Williamson for a consultation?
You can contact John Matthew Williamson 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. Economics
University of Colorado
- 2000
B.A. Economics
University of Colorado
- 1997

Bar Admissions

Colorado
Admitted: 2000
District of Columbia registered to practice before U.S. Patent and Trademark Office
Admitted: 2001

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