Atty. Diane M Sullivan

Atty. Diane M Sullivan

Diane M Sullivan is a lawyer practicing litigation, federal trial law, appellate practice and 2 other areas of law. Diane received a A.B. degree from George Washington University, and has been licensed for 56 years.

Washington Washington 56 yrs experience 56 year
Call (202) 738-1866 Book Appointment

Profile Summary

About Diane M Sullivan at a glance

Diane M Sullivan is an Asst. U.S. Atty. based in Washington, District of Columbia. They have 56+ years of legal experience, licensed to practice since 1970. Their practice focuses on personal injury, employment, litigation, and appellate. Admitted to practice in District of Columbia (1970). Educated at George Washington University J.D. (—) and George Washington University A.B. (—). Recognitions include AV Preeminent. Serands clients in Washington, DC and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Diane M Sullivan is a lawyer practicing litigation, federal trial law, appellate practice and 2 other areas of law
  • Diane received a A.B. degree from George Washington University, and has been licensed for 56 years
  • Diane practices in Washington, DC

Practice Areas Explained

Diane M Sullivan's Areas of Practice

Each practice area below reflects the types of cases Diane M Sullivan handles, with a brief overview of what that area of law covers.

Personal Injury

Personal injury attorneys help accident victims recover compensation for medical bills, lost wages, and pain & suffering. Most work on contingency — no fee unless you win.

Diane M Sullivan is one of 264,852 personal injury attorneys indexed nationally. Browse personal injury attorneys in District of Columbia →

Employment Law

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

Diane M Sullivan is one of 169,120 employment attorneys indexed nationally. Browse employment attorneys in District of Columbia →

Civil Litigation

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

Diane M Sullivan is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in District of Columbia →

Appellate Practice

Appellate attorneys for civil and criminal appeals at state and federal court.

Diane M Sullivan is one of 86,319 appellate attorneys indexed nationally. Browse appellate 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 Diane M Sullivan

Where is Diane M Sullivan's law office located?
Diane M Sullivan's law practice is located in Washington, District of Columbia. You can contact the office directly through this profile page.
What practice areas does Diane M Sullivan handle?
Diane M Sullivan focuses on personal injury, employment, litigation, appellate. Each practice area listed reflects experience handling cases of that type in District of Columbia.
How long has Diane M Sullivan practiced law?
Diane M Sullivan has 56+ years of legal experience and has been licensed since 1970.
Where did Diane M Sullivan go to law school?
Diane M Sullivan earned their education at (—); (—).
How can I contact Diane M Sullivan for a consultation?
You can contact Diane M Sullivan 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 Diane M Sullivan received?
Diane M Sullivan's notable recognition includes: AV Preeminent.

Education

George Washington University J.D.
- In Progress
George Washington University A.B.
- In Progress

Awards

AV Preeminent

Bar Admissions

District of Columbia
Admitted: 1970

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