Atty. Daniel Patrick Shanahan

Atty. Daniel Patrick Shanahan

Daniel Patrick Shanahan is a lawyer practicing administrative law, government, class actions and 6 other areas of law. Daniel received a B.A. degree from University of Virginia in 1992, and has been licensed for 27 years.

Washington Washington 27 yrs experience 27 year
Call (771) 240-4078 Book Appointment

Profile Summary

About Daniel Patrick Shanahan at a glance

Daniel Patrick Shanahan is a Partner based in Washington, District of Columbia, practicing at Williams And Connolly Llp. They have 27+ years of legal experience, licensed to practice since 1999. Their practice focuses on patent, criminal defense, ip, class action, and litigation. Admitted to practice in Maryland (1999) and District of Columbia U.S. District Court for the District of Columbia and U.S. District Court, Distr (2005). Educated at University of Virginia (B.A., 1992) and Georgetown University Law Center (J.D., 1990). Active member of Maryland State and American Bar Associations District of Columbia Bar National Association of Criminal Defense Lawyers. Serands clients in Washington, DC and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Daniel Patrick Shanahan is a lawyer practicing administrative law, government, class actions and 6 other areas of law
  • Daniel received a B.A. degree from University of Virginia in 1992, and has been licensed for 27 years
  • Daniel practices at Williams & Connolly LLP in Washington, DC

Practice Areas Explained

Daniel Patrick Shanahan's Areas of Practice

Each practice area below reflects the types of cases Daniel Patrick Shanahan handles, with a brief overview of what that area of law covers.

Patent Law

Daniel Patrick Shanahan is one of 20,749 patent attorneys indexed nationally. Browse patent attorneys in District of Columbia →

Criminal Defense

A criminal defense attorney protects your rights from arrest through trial. Find experienced lawyers handling DUI, drug, federal, theft, and violent-crime charges.

Daniel Patrick Shanahan is one of 214,270 criminal defense attorneys indexed nationally. Browse criminal defense attorneys in District of Columbia →

Intellectual Property

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

Daniel Patrick Shanahan is one of 106,079 ip attorneys indexed nationally. Browse ip attorneys in District of Columbia →

Class Action

Daniel Patrick Shanahan is one of 26,424 class action attorneys indexed nationally. Browse class action attorneys in District of Columbia →

Civil Litigation

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

Daniel Patrick Shanahan is one of 454,532 litigation attorneys indexed nationally. Browse litigation 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 Daniel Patrick Shanahan

Where is Daniel Patrick Shanahan's law office located?
Daniel Patrick Shanahan's law practice is located in Washington, District of Columbia. The firm is Williams And Connolly Llp. You can contact the office directly through this profile page.
What practice areas does Daniel Patrick Shanahan handle?
Daniel Patrick Shanahan focuses on patent, criminal defense, ip, class action, litigation. Each practice area listed reflects experience handling cases of that type in District of Columbia.
How long has Daniel Patrick Shanahan practiced law?
Daniel Patrick Shanahan has 27+ years of legal experience and has been licensed since 1999.
Where did Daniel Patrick Shanahan go to law school?
Daniel Patrick Shanahan earned their education at (B.A., 1992); (J.D., 1990).
How can I contact Daniel Patrick Shanahan for a consultation?
You can contact Daniel Patrick Shanahan 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

B.A.
University of Virginia
- 1992
J.D.
Georgetown University Law Center
- 1990

Bar Admissions

Maryland
Admitted: 1999
District of Columbia U.S. District Court for the District of Columbia and U.S. District Court, Distr
Admitted: 2005

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