Atty. Thomas Semmes Dann

Atty. Thomas Semmes Dann

Mr. Thomas Semmes Dann is a lawyer practicing corporate law, technology law, commercial litigation and 2 other areas of law.

Chevy Chase Chevy Chase 47 yrs experience 47 year
Call (301) 900-3420 Book Appointment

Profile Summary

About Thomas Semmes Dann at a glance

Thomas Semmes Dann is a employment, business, litigation, and internet attorney based in Chevy Chase, Maryland. They have 47+ years of legal experience, licensed to practice since 1979. Admitted to practice in District of Columbia (1979), California (1981), U.S. District Court, District of Columbia (1981), and Maryland (1982). Educated at American University (J.D., 1979) and Stanford University (B.A., 1975). Recognitions include AV Preeminent. Serands clients in Chevy Chase, MD and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mr. Thomas Semmes Dann is a lawyer practicing corporate law, technology law, commercial litigation and 2 other areas of law
  • Thomas received a B.A. degree from Stanford University in 1975, and has been licensed for 47 years
  • Thomas practices in Chevy Chase, MD

Practice Areas Explained

Thomas Semmes Dann's Areas of Practice

Each practice area below reflects the types of cases Thomas Semmes Dann handles, with a brief overview of what that area of law covers.

Employment Law

Employment lawyers represent workers in wrongful termination, discrimination, harassment, wage & hour disputes, and severance negotiations.

Thomas Semmes Dann is one of 169,120 employment attorneys indexed nationally. Browse employment attorneys in Maryland →

Business & Corporate Law

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

Thomas Semmes Dann is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Maryland →

Civil Litigation

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

Thomas Semmes Dann is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in Maryland →

Internet & Cyber Law

Internet and cyber lawyers for data breaches, online defamation, privacy law, and cybersecurity matters.

Thomas Semmes Dann is one of 17,958 internet attorneys indexed nationally. Browse internet attorneys in Maryland →

Jurisdictional Context

Why local counsel matters in Maryland

Practicing law in Maryland. Legal matters in Maryland are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Chevy Chase are typically filed in the local municipal court or the appropriate Maryland state district court, depending on subject matter and amount in controversy. An attorney licensed in Maryland 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 Maryland courts without local counsel or pro hac vice admission.

Looking for additional Maryland attorneys? Browse all attorneys in Chevy Chase or all attorneys in Maryland.

Frequently Asked

Common questions about Thomas Semmes Dann

Where is Thomas Semmes Dann's law office located?
Thomas Semmes Dann's law practice is located in Chevy Chase, Maryland. You can contact the office directly through this profile page.
What practice areas does Thomas Semmes Dann handle?
Thomas Semmes Dann focuses on employment, business, litigation, internet. Each practice area listed reflects experience handling cases of that type in Maryland.
How long has Thomas Semmes Dann practiced law?
Thomas Semmes Dann has 47+ years of legal experience and has been licensed since 1979.
Where did Thomas Semmes Dann go to law school?
Thomas Semmes Dann earned their education at (J.D., 1979); (B.A., 1975).
How can I contact Thomas Semmes Dann for a consultation?
You can contact Thomas Semmes Dann 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 Thomas Semmes Dann received?
Thomas Semmes Dann's notable recognition includes: AV Preeminent.

Education

J.D.
American University
- 1979
B.A.
Stanford University
- 1975

Awards

AV Preeminent

Bar Admissions

District of Columbia
Admitted: 1979
California
Admitted: 1981
U.S. District Court, District of Columbia
Admitted: 1981
Maryland
Admitted: 1982
U.S. Supreme Court
Admitted: 1991
U.S. District Court, District of Maryland
Admitted: 1994

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