Atty. Stephen Mark Leff

Atty. Stephen Mark Leff

Stephen Mark Leff is a lawyer practicing corporate law. Stephen received a B.S. degree from University of Illinois in 1988, and has been licensed for 35 years.

Highland Park Highland Park 35 Years Experience 35 year
Call (224) 365-6492

Profile Summary

About Stephen Mark Leff at a glance

Stephen Mark Leff is a business attorney based in Highland Park, Illinois. They have 35+ years of legal experience, licensed to practice since 1991. Admitted to practice in Illinois (1991). Educated at University of Pennsylvania (J.D., 1991) and University of Illinois (B.S., 1988). Serves clients in Highland Park, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Stephen Mark Leff is a lawyer practicing corporate law
  • Stephen received a B.S. degree from University of Illinois in 1988, and has been licensed for 35 years
  • Stephen practices in Highland Park, IL

Practice Areas Explained

Stephen Mark Leff's Areas of Practice

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

Business & Corporate Law

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

Stephen Mark Leff is one of 452,854 business attorneys indexed nationally. Browse business attorneys in Illinois →

Jurisdictional Context

Why local counsel matters in Illinois

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

Looking for additional Illinois attorneys? Browse all attorneys in Highland Park or all attorneys in Illinois.

Frequently Asked

Common questions about Stephen Mark Leff

Where is Stephen Mark Leff's law office located?
Stephen Mark Leff's law practice is located in Highland Park, Illinois. You can contact the office directly through this profile page.
What practice areas does Stephen Mark Leff handle?
Stephen Mark Leff focuses on business. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has Stephen Mark Leff practiced law?
Stephen Mark Leff has 35+ years of legal experience and has been licensed since 1991.
Where did Stephen Mark Leff go to law school?
Stephen Mark Leff earned their education at (J.D., 1991); (B.S., 1988).
How can I contact Stephen Mark Leff for a consultation?
You can contact Stephen Mark Leff 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.

Practice Areas

Education

J.D.
University of Pennsylvania
- 1991
B.S.
University of Illinois
- 1988

Bar Admissions

Illinois
Admitted: 1991

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