Atty. William Joseph Trappen

Atty. William Joseph Trappen

William Joseph Trappen is a lawyer practicing business, state and federal government and administrative practice, media and 5 other areas of law. William received a B.A. degree from University of Pittsburgh in 1992, and has been licensed for 26 years.

McLean McLean 26 yrs experience 26 year
Call (301) 450-0704 Book Appointment

Profile Summary

About William Joseph Trappen at a glance

William Joseph Trappen is a Sr. Corp. Coun. based in McLean, Virginia. They have 26+ years of legal experience, licensed to practice since 2000. Their practice focuses on contracts, business, ip, government, and entertainment. Admitted to practice in Florida (2000), District of Columbia (2013), and Virginia (limited to Corporate Counsel only) (2013). Educated at Temple University (J.D., 1999) and University of Pittsburgh (B.A., 1992). Serands clients in McLean, VA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • William Joseph Trappen is a lawyer practicing business, state and federal government and administrative practice, media and 5 other areas of law
  • William received a B.A. degree from University of Pittsburgh in 1992, and has been licensed for 26 years
  • William practices in McLean, VA

Practice Areas Explained

William Joseph Trappen's Areas of Practice

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

Contracts

William Joseph Trappen is one of 76,762 contracts attorneys indexed nationally. Browse contracts attorneys in Virginia →

Business & Corporate Law

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

William Joseph Trappen is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Virginia →

Intellectual Property

IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.

William Joseph Trappen is one of 106,079 ip attorneys indexed nationally. Browse ip attorneys in Virginia →

Government & Administrative Law

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

William Joseph Trappen is one of 132,225 government attorneys indexed nationally. Browse government attorneys in Virginia →

Entertainment & Sports Law

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

William Joseph Trappen is one of 45,946 entertainment attorneys indexed nationally. Browse entertainment attorneys in Virginia →

Jurisdictional Context

Why local counsel matters in Virginia

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

Looking for additional Virginia attorneys? Browse all attorneys in McLean or all attorneys in Virginia.

Frequently Asked

Common questions about William Joseph Trappen

Where is William Joseph Trappen's law office located?
William Joseph Trappen's law practice is located in McLean, Virginia. You can contact the office directly through this profile page.
What practice areas does William Joseph Trappen handle?
William Joseph Trappen focuses on contracts, business, ip, government, entertainment. Each practice area listed reflects experience handling cases of that type in Virginia.
How long has William Joseph Trappen practiced law?
William Joseph Trappen has 26+ years of legal experience and has been licensed since 2000.
Where did William Joseph Trappen go to law school?
William Joseph Trappen earned their education at (J.D., 1999); (B.A., 1992).
How can I contact William Joseph Trappen for a consultation?
You can contact William Joseph Trappen 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.
Temple University
- 1999
B.A.
University of Pittsburgh
- 1992

Bar Admissions

Florida
Admitted: 2000
District of Columbia
Admitted: 2013
Virginia (limited to Corporate Counsel only)
Admitted: 2013

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