Atty. John P. Williams

Atty. John P. Williams

Stillman Prize, 1976. Senior Editor, Moot Court Board, 1978-1979.

Washington Washington 46 yrs experience 46 year
Call (771) 240-4554 Book Appointment

Profile Summary

About John P. Williams at a glance

John P. Williams is an Of Counsel based in Washington, District of Columbia, practicing at Duncan & Allen. They have 46+ years of legal experience, licensed to practice since 1980. Their practice focuses on litigation, energy, and international. Admitted to practice in New York (1980), District of Columbia (1986), U.S. Court of International Trade (1987), and U.S. Court of Appeals for the District of Columbia Circuit (1989). Educated at New York University (J.D., 1979) and Harvard University (A.B. Princeton, 1971). Recognitions include AV Preeminent. Active member of The District of Columbia Bar American Bar Association. Serands clients in Washington, DC and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Stillman Prize, 1976
  • Senior Editor, Moot Court Board, 1978-1979

Author

  • "Global Trends and Tribulations in Mining Regulation", Journal of Energy and Natural Resources Law, December 2012
  • "International Best Practice in Mining: Who Decides and How - And How Does It Impact Law Development?
  • Georgetown Journal of International Law, Summer 2008
  • Legal Reform in Mining: Past, Present, Future and The Latin American Mining Law Model in International and Comparative Mineral Law and Policy (The Hague, Kluwer Law International, 2005)

Co-author

  • The Potential for Mining Investment in Transition Economy Countries of East and Central Asia (London, Mining Journal, 2003)
  • Review of Legal and Fiscal Frameworks for Exploration and Mining (London, Mining Journal 2001)

Contributor

Mining Sector Reform and Investment: Results of a Global Survey (London, Mining Journal 2001)

Author

  • "Chapter II: Legal and Fiscal Aspects of Mining Regulation in Latin America," A Mining Strategy for Latin America and the Caribbean, World Bank Technical Paper No. 345 (Washington, D.C. 1996)
  • "Wheeling & Dealing: FERC's Evolving Approach to Electric Utility Mergers," The Electricity Journal, August/September, 1989
  • Member, Rocky Mountain Mineral Law Foundation

Practice Areas Explained

John P. Williams's Areas of Practice

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

Civil Litigation

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

John P. Williams is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in District of Columbia →

Energy & Utilities Law

Energy attorneys for oil & gas, renewables, utility regulation, and energy sector transactions.

John P. Williams is one of 36,230 energy attorneys indexed nationally. Browse energy attorneys in District of Columbia →

International Law

International law attorneys for cross-border transactions, trade, foreign investment, and treaties.

John P. Williams is one of 40,133 international attorneys indexed nationally. Browse international 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 P. Williams

Where is John P. Williams's law office located?
John P. Williams's law practice is located in Washington, District of Columbia. The firm is Duncan & Allen. You can contact the office directly through this profile page.
What practice areas does John P. Williams handle?
John P. Williams focuses on litigation, energy, international. Each practice area listed reflects experience handling cases of that type in District of Columbia.
How long has John P. Williams practiced law?
John P. Williams has 46+ years of legal experience and has been licensed since 1980.
Where did John P. Williams go to law school?
John P. Williams earned their education at (J.D., 1979); (A.B. Princeton, 1971).
How can I contact John P. Williams for a consultation?
You can contact John P. Williams 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 P. Williams received?
John P. Williams's notable recognition includes: AV Preeminent.

Education

J.D.
New York University
- 1979
A.B. Princeton
Harvard University
- 1971

Awards

AV Preeminent

Bar Admissions

New York
Admitted: 1980
District of Columbia
Admitted: 1986
U.S. Court of International Trade
Admitted: 1987
U.S. Court of Appeals for the District of Columbia Circuit
Admitted: 1989
U.S. Supreme Court
Admitted: 1990
U.S. Claims Court
Admitted: 1998
U.S. Court of Appeals for the Federal Circuit
Admitted: 2000
Virginia
Admitted: 2011
Maryland
Admitted: 2012

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