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Atty. Mark F Horning

Atty. Mark F Horning

Mark F Horning is a lawyer practicing antitrust and competition, class action, insurance & reinsurance and 4 other areas of law. Mark received a B.A. degree from Yale University in 1968, and has been licensed for 51 years.

Washington Washington 51 yrs experience 51 year
Call (443) 909-4791 Book Appointment

Profile Summary

About Mark F Horning at a glance

Mark F Horning is a Partner based in Washington, District of Columbia, practicing at Steptoe Llp. They have 51+ years of legal experience, licensed to practice since 1975. Their practice focuses on class action, litigation, and insurance. Admitted to practice in District of Columbia (1975). Educated at Yale Law School (J.D., 1974) and Yale University (B.A., 1968). Recognitions include AV Preeminent. Active member of American Bar Association. Serands clients in Washington, DC and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mark F Horning is a lawyer practicing antitrust and competition, class action, insurance & reinsurance and 4 other areas of law
  • Mark received a B.A. degree from Yale University in 1968, and has been licensed for 51 years
  • Mark practices at Steptoe LLP in Washington, DC

Practice Areas Explained

Mark F Horning's Areas of Practice

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

Class Action

Mark F Horning is one of 26,424 class action attorneys indexed nationally. Browse class action attorneys in District of Columbia →

Civil Litigation

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

Mark F Horning is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in District of Columbia →

Insurance Law

Insurance attorneys for coverage disputes, bad faith claims, denied claims, and policy disputes.

Mark F Horning is one of 121,912 insurance attorneys indexed nationally. Browse insurance 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 Mark F Horning

Where is Mark F Horning's law office located?
Mark F Horning's law practice is located in Washington, District of Columbia. The firm is Steptoe Llp. You can contact the office directly through this profile page.
What practice areas does Mark F Horning handle?
Mark F Horning focuses on class action, litigation, insurance. Each practice area listed reflects experience handling cases of that type in District of Columbia.
How long has Mark F Horning practiced law?
Mark F Horning has 51+ years of legal experience and has been licensed since 1975.
Where did Mark F Horning go to law school?
Mark F Horning earned their education at (J.D., 1974); (B.A., 1968).
How can I contact Mark F Horning for a consultation?
You can contact Mark F Horning 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 F Horning received?
Mark F Horning's notable recognition includes: AV Preeminent.

Education

J.D.
Yale Law School
- 1974
B.A.
Yale University
- 1968

Awards

AV Preeminent

Bar Admissions

District of Columbia
Admitted: 1975

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