Atty. Mark Steven Lillie

Atty. Mark Steven Lillie

Mark Steven Lillie is a lawyer practicing commercial, litigation, class action, mass tort & toxic tort litigation and 3 other areas of law. Mark received a B.S. degree from Northwestern University in 1981, and has been licensed for 42 years.

Chicago Chicago 42 yrs experience 42 year
Call (312) 481-8617 Book Appointment

Profile Summary

About Mark Steven Lillie at a glance

Mark Steven Lillie is a Partner based in Chicago, Illinois, practicing at Kirkland & Ellis LLP. They have 42+ years of legal experience, licensed to practice since 1984. Their practice focuses on business, class action, product liability, litigation, and environmental. Admitted to practice in Colorado (1984), Illinois (1995), and Texas U.S. District Court for the Northern District of Illinois, Central District of Illinois, Distr (2009). Educated at University of Denver College of Law (J.D., 1984) and Northwestern University (B.S. Engineering, 1981). Recognitions include AV Preeminent. Active member of Chicago and American Bar Associations. Serands clients in Chicago, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mark Steven Lillie is a lawyer practicing commercial, litigation, class action, mass tort & toxic tort litigation and 3 other areas of law
  • Mark received a B.S. degree from Northwestern University in 1981, and has been licensed for 42 years
  • Mark practices at Kirkland & Ellis LLP in Chicago, IL

Practice Areas Explained

Mark Steven Lillie's Areas of Practice

Each practice area below reflects the types of cases Mark Steven Lillie 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.

Mark Steven Lillie is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Illinois →

Class Action

Mark Steven Lillie is one of 26,424 class action attorneys indexed nationally. Browse class action attorneys in Illinois →

Product Liability

Mark Steven Lillie is one of 66,193 product liability attorneys indexed nationally. Browse product liability attorneys in Illinois →

Civil Litigation

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

Mark Steven Lillie is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in Illinois →

Environmental Law

Environmental attorneys for regulatory compliance, contamination, land use, and natural resource law.

Mark Steven Lillie is one of 56,434 environmental attorneys indexed nationally. Browse environmental 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 Chicago 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 andnue, 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 Chicago or all attorneys in Illinois.

Frequently Asked

Common questions about Mark Steven Lillie

Where is Mark Steven Lillie's law office located?
Mark Steven Lillie's law practice is located in Chicago, Illinois. The firm is Kirkland & Ellis LLP. You can contact the office directly through this profile page.
What practice areas does Mark Steven Lillie handle?
Mark Steven Lillie focuses on business, class action, product liability, litigation, environmental. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has Mark Steven Lillie practiced law?
Mark Steven Lillie has 42+ years of legal experience and has been licensed since 1984.
Where did Mark Steven Lillie go to law school?
Mark Steven Lillie earned their education at (J.D., 1984); (B.S. Engineering, 1981).
How can I contact Mark Steven Lillie for a consultation?
You can contact Mark Steven Lillie 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 Steven Lillie received?
Mark Steven Lillie's notable recognition includes: AV Preeminent.

Education

J.D.
University of Denver College of Law
- 1984
B.S. Engineering
Northwestern University
- 1981

Awards

AV Preeminent

Bar Admissions

Colorado
Admitted: 1984
Illinois
Admitted: 1995
Texas U.S. District Court for the Northern District of Illinois, Central District of Illinois, Distr
Admitted: 2009

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