Atty. Mark S. Willis

Atty. Mark S. Willis

Mr. Mark S.

Washington Washington 36 Years Experience 36 year

Profile Summary

About Mark S. Willis at a glance

Mark S. Willis is a Partner based in Washington, District of Columbia, practicing at Labaton Sucharow Llp. They have 36+ years of legal experience, licensed to practice since 1990. Their practice focuses on securities, litigation, consumer, and international. Admitted to practice in Massachusetts (1990), District of Columbia (1999), and U.S. District Court: District of Columbia (1999). Educated at Georgetown University Law Center (LL.M. International, 1993) and Brigham Young University (B.A., 1986). Serves clients in Washington, DC and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mr. Mark S. Willis is a lawyer practicing securities litigation, non-u.s. securities litigation, international law and 3 other areas of law
  • Mark received a B.A. degree from Brigham Young University in 1986, and has been licensed for 36 years
  • Mark practices at Labaton Sucharow LLP in Washington, DC

Practice Areas Explained

Mark S. Willis's Areas of Practice

Each practice area below reflects the types of cases Mark S. Willis handles, with a brief overview of what that area of law covers.

Securities Law

Mark S. Willis is one of 58,852 securities attorneys indexed nationally. Browse securities attorneys in District of Columbia →

Civil Litigation

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

Mark S. Willis is one of 409,070 litigation attorneys indexed nationally. Browse litigation attorneys in District of Columbia →

Consumer Protection

Consumer protection attorneys for fraud, lemon law, debt harassment, and deceptive trade practices.

Mark S. Willis is one of 45,538 consumer attorneys indexed nationally. Browse consumer attorneys in District of Columbia →

International Law

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

Mark S. Willis is one of 36,155 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 venue, 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 Mark S. Willis

Where is Mark S. Willis's law office located?
Mark S. Willis's law practice is located in Washington, District of Columbia. The firm is Labaton Sucharow Llp. You can contact the office directly through this profile page.
What practice areas does Mark S. Willis handle?
Mark S. Willis focuses on securities, litigation, consumer, international. Each practice area listed reflects experience handling cases of that type in District of Columbia.
How long has Mark S. Willis practiced law?
Mark S. Willis has 36+ years of legal experience and has been licensed since 1990.
Where did Mark S. Willis go to law school?
Mark S. Willis earned their education at (LL.M. International, 1993); (B.A., 1986).
How can I contact Mark S. Willis for a consultation?
You can contact Mark S. Willis 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

LL.M. International
Georgetown University Law Center
- 1993
B.A.
Brigham Young University
- 1986

Bar Admissions

Massachusetts
Admitted: 1990
District of Columbia
Admitted: 1999
U.S. District Court: District of Columbia
Admitted: 1999

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