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Atty. Sean Robert Gannon

Atty. Sean Robert Gannon

Sean Robert Gannon is a lawyer practicing tax law. Sean received a B.A. degree from Michigan State University in 1992, and has been licensed for 28 years.

Chicago Chicago 28 yrs experience 28 year
Call (872) 336-0868 Book Appointment

Profile Summary

About Sean Robert Gannon at a glance

Sean Robert Gannon is a Chf. Coun. IRS Off. based in Chicago, Illinois. They have 28+ years of legal experience, licensed to practice since 1998. Their practice focuses on tax. Admitted to practice in Illinois (1998). Educated at Thomas M. Cooley Law School (J.D. University, 1997) and Michigan State University (B.A., 1992). Serands clients in Chicago, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Sean Robert Gannon is a lawyer practicing tax law
  • Sean received a B.A. degree from Michigan State University in 1992, and has been licensed for 28 years
  • Sean practices in Chicago, IL

Practice Areas Explained

Sean Robert Gannon's Areas of Practice

Each practice area below reflects the types of cases Sean Robert Gannon 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.

Sean Robert Gannon is one of 85,302 tax attorneys indexed nationally. Browse tax 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 Sean Robert Gannon

Where is Sean Robert Gannon's law office located?
Sean Robert Gannon's law practice is located in Chicago, Illinois. You can contact the office directly through this profile page.
What practice areas does Sean Robert Gannon handle?
Sean Robert Gannon focuses on tax. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has Sean Robert Gannon practiced law?
Sean Robert Gannon has 28+ years of legal experience and has been licensed since 1998.
Where did Sean Robert Gannon go to law school?
Sean Robert Gannon earned their education at (J.D. University, 1997); (B.A., 1992).
How can I contact Sean Robert Gannon for a consultation?
You can contact Sean Robert Gannon 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
Thomas M. Cooley Law School
- 1997
B.A.
Michigan State University
- 1992

Bar Admissions

Illinois
Admitted: 1998

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