Atty. Mark Francis Duffy

Atty. Mark Francis Duffy

Mark Francis Duffy is a lawyer practicing securities, commodities, taxation. Mark received a B.A. degree from University of Michigan in 1972, and has been licensed for 45 years.

Chicago Chicago 45 yrs experience 45 year
Call (872) 336-0868 Book Appointment

Profile Summary

About Mark Francis Duffy at a glance

Mark Francis Duffy is a tax and securities attorney based in Chicago, Illinois. They have 45+ years of legal experience, licensed to practice since 1981. Admitted to practice in Illinois (1981). Educated at John Marshall Law School (J.D. John, 1981) and University of Michigan (B.A. University, 1972). Serands clients in Chicago, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mark Francis Duffy is a lawyer practicing securities, commodities, taxation
  • Mark received a B.A. degree from University of Michigan in 1972, and has been licensed for 45 years
  • Mark practices in Chicago, IL

Practice Areas Explained

Mark Francis Duffy's Areas of Practice

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

Tax Law

Tax attorneys handle IRS audits, tax debt, international tax, estate planning, and tax court litigation.

Mark Francis Duffy is one of 85,302 tax attorneys indexed nationally. Browse tax attorneys in Illinois →

Securities Law

Mark Francis Duffy is one of 64,529 securities attorneys indexed nationally. Browse securities 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 Francis Duffy

Where is Mark Francis Duffy's law office located?
Mark Francis Duffy's law practice is located in Chicago, Illinois. You can contact the office directly through this profile page.
What practice areas does Mark Francis Duffy handle?
Mark Francis Duffy focuses on tax, securities. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has Mark Francis Duffy practiced law?
Mark Francis Duffy has 45+ years of legal experience and has been licensed since 1981.
Where did Mark Francis Duffy go to law school?
Mark Francis Duffy earned their education at (J.D. John, 1981); (B.A. University, 1972).
How can I contact Mark Francis Duffy for a consultation?
You can contact Mark Francis Duffy 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.

Education

J.D. John
John Marshall Law School
- 1981
B.A. University
University of Michigan
- 1972

Bar Admissions

Illinois
Admitted: 1981

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