Atty. John Marshall Cook

Atty. John Marshall Cook

Mr. John Marshall Cook is a lawyer practicing government contracts, contracts / agreements, litigation.

Tysons Tysons 33 yrs experience 33 year
Call (571) 651-8748 Book Appointment

Profile Summary

About John Marshall Cook at a glance

John Marshall Cook is a Member based in Tysons, Virginia, practicing at Haynes and Boone, LLP. They have 33+ years of legal experience, licensed to practice since 1993. Their practice focuses on contracts, litigation, and government. Admitted to practice in Virginia (1993) and District of Columbia (1995). Educated at American University, Washington College of Law (J.D., 1993) and Haverford College (B.A., 1990). Serands clients in Tysons, VA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mr. John Marshall Cook is a lawyer practicing government contracts, contracts / agreements, litigation
  • John received a B.A. degree from Haverford College in 1990, and has been licensed for 33 years
  • John practices at Haynes and Boone, LLP in Tysons, VA

Practice Areas Explained

John Marshall Cook's Areas of Practice

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

Contracts

John Marshall Cook is one of 76,762 contracts attorneys indexed nationally. Browse contracts attorneys in Virginia →

Civil Litigation

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

John Marshall Cook is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in Virginia →

Government & Administrative Law

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

John Marshall Cook is one of 132,225 government attorneys indexed nationally. Browse government 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 Tysons 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 Tysons or all attorneys in Virginia.

Frequently Asked

Common questions about John Marshall Cook

Where is John Marshall Cook's law office located?
John Marshall Cook's law practice is located in Tysons, Virginia. The firm is Haynes and Boone, LLP. You can contact the office directly through this profile page.
What practice areas does John Marshall Cook handle?
John Marshall Cook focuses on contracts, litigation, government. Each practice area listed reflects experience handling cases of that type in Virginia.
How long has John Marshall Cook practiced law?
John Marshall Cook has 33+ years of legal experience and has been licensed since 1993.
Where did John Marshall Cook go to law school?
John Marshall Cook earned their education at (J.D., 1993); (B.A., 1990).
How can I contact John Marshall Cook for a consultation?
You can contact John Marshall Cook 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.
American University, Washington College of Law
- 1993
B.A.
Haverford College
- 1990

Bar Admissions

Virginia
Admitted: 1993
District of Columbia
Admitted: 1995

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