Atty. Mark Daniel Cahn

Atty. Mark Daniel Cahn

Mark Daniel Cahn is a lawyer practicing civil practice, securities, antitrust and 1 other area of law. Mark received a B.A. degree from Tufts University in 1983, and has been licensed for 39 years.

Washington Washington 39 Years Experience 39 year
Call (443) 909-4915

Profile Summary

About Mark Daniel Cahn at a glance

Mark Daniel Cahn is an Attorney based in Washington, District of Columbia, practicing at Wilmerhale. They have 39+ years of legal experience, licensed to practice since 1987. Their practice focuses on criminal defense, securities, and litigation. Admitted to practice in New York (1987) and District of Columbia (1988). Educated at Yale University (J.D., 1986) and Tufts University (B.A., 1983). Recognitions include AV Preeminent. Serves clients in Washington, DC and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mark Daniel Cahn is a lawyer practicing civil practice, securities, antitrust and 1 other area of law
  • Mark received a B.A. degree from Tufts University in 1983, and has been licensed for 39 years
  • Mark practices at WilmerHale in Washington, DC

Practice Areas Explained

Mark Daniel Cahn's Areas of Practice

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

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.

Mark Daniel Cahn is one of 190,900 criminal defense attorneys indexed nationally. Browse criminal defense attorneys in District of Columbia →

Securities Law

Mark Daniel Cahn 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 Daniel Cahn is one of 409,070 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 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 Daniel Cahn

Where is Mark Daniel Cahn's law office located?
Mark Daniel Cahn's law practice is located in Washington, District of Columbia. The firm is Wilmerhale. You can contact the office directly through this profile page.
What practice areas does Mark Daniel Cahn handle?
Mark Daniel Cahn focuses on criminal defense, securities, litigation. Each practice area listed reflects experience handling cases of that type in District of Columbia.
How long has Mark Daniel Cahn practiced law?
Mark Daniel Cahn has 39+ years of legal experience and has been licensed since 1987.
Where did Mark Daniel Cahn go to law school?
Mark Daniel Cahn earned their education at (J.D., 1986); (B.A., 1983).
How can I contact Mark Daniel Cahn for a consultation?
You can contact Mark Daniel Cahn 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 Mark Daniel Cahn received?
Mark Daniel Cahn's notable recognition includes: AV Preeminent.

Education

J.D.
Yale University
- 1986
B.A.
Tufts University
- 1983

Awards

AV Preeminent

Bar Admissions

New York
Admitted: 1987
District of Columbia
Admitted: 1988

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