Atty. Sean Michael Lonnquist

Atty. Sean Michael Lonnquist

Mr. Sean Michael Lonnquist is a lawyer.

Washington Washington 19 yrs experience 19 year
Call (771) 218-3541 Book Appointment

Profile Summary

About Sean Michael Lonnquist at a glance

Sean Michael Lonnquist is an Associate based in Washington, District of Columbia, practicing at Vinson And Elkins Llp. They have 19+ years of legal experience, licensed to practice since 2007. Admitted to practice in Virginia (2007) and District of Columbia (2008). Educated at Duke University (J.D., 2007) and University of Colorado (B.A. Spanish, 2001). Serands clients in Washington, DC and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mr. Sean Michael Lonnquist is a lawyer
  • Sean received a B.A. degree from University of Colorado in 2001, and has been licensed for 19 years
  • Sean practices at Vinson & Elkins LLP in Washington, DC

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 Sean Michael Lonnquist

Where is Sean Michael Lonnquist's law office located?
Sean Michael Lonnquist's law practice is located in Washington, District of Columbia. The firm is Vinson And Elkins Llp. You can contact the office directly through this profile page.
How long has Sean Michael Lonnquist practiced law?
Sean Michael Lonnquist has 19+ years of legal experience and has been licensed since 2007.
Where did Sean Michael Lonnquist go to law school?
Sean Michael Lonnquist earned their education at (J.D., 2007); (B.A. Spanish, 2001).
How can I contact Sean Michael Lonnquist for a consultation?
You can contact Sean Michael Lonnquist 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.
Duke University
- 2007
B.A. Spanish
University of Colorado
- 2001

Bar Admissions

Virginia
Admitted: 2007
District of Columbia
Admitted: 2008

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