Atty. William Francis Conlon

Atty. William Francis Conlon

William Francis Conlon is a lawyer practicing complex commercial litigation, erisa litigation, white collar and 7 other areas of law. William received a A.B. degree from Indiana University in 1967, and has been licensed for 56 years.

Chicago Chicago 56 yrs experience 56 year
Call (312) 463-9838 Book Appointment

Profile Summary

About William Francis Conlon at a glance

William Francis Conlon is a Partner based in Chicago, Illinois, practicing at Sidley Austin LLP. They have 56+ years of legal experience, licensed to practice since 1970. Their practice focuses on formation, criminal defense, employment, business, and class action. Admitted to practice in Illinois (1970), Iowa (1970), U.S. District Court, Eastern District of Michigan (1970), and U.S. Supreme Court, U.S. District Court, Northern District of Illinois including Trial Bar and U.S. (1975). Educated at University of Illinois College of Law (J.D., 1970) and Indiana University (A.B., 1967). Recognitions include AV Preeminent. Serands clients in Chicago, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • William Francis Conlon is a lawyer practicing complex commercial litigation, erisa litigation, white collar and 7 other areas of law
  • William received a A.B. degree from Indiana University in 1967, and has been licensed for 56 years
  • William practices at Sidley Austin LLP in Chicago, IL

Practice Areas Explained

William Francis Conlon's Areas of Practice

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

Business Formation

William Francis Conlon is one of 35,584 formation attorneys indexed nationally. Browse formation attorneys in Illinois →

Criminal Defense

A criminal defense attorney protects your rights from arrest through trial. Find experienced lawyers handling DUI, drug, federal, theft, and violent-crime charges.

William Francis Conlon is one of 214,270 criminal defense attorneys indexed nationally. Browse criminal defense attorneys in Illinois →

Employment Law

Employment lawyers represent workers in wrongful termination, discrimination, harassment, wage & hour disputes, and severance negotiations.

William Francis Conlon is one of 169,120 employment attorneys indexed nationally. Browse employment attorneys in Illinois →

Business & Corporate Law

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

William Francis Conlon is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Illinois →

Class Action

William Francis Conlon is one of 26,424 class action attorneys indexed nationally. Browse class action 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 William Francis Conlon

Where is William Francis Conlon's law office located?
William Francis Conlon's law practice is located in Chicago, Illinois. The firm is Sidley Austin LLP. You can contact the office directly through this profile page.
What practice areas does William Francis Conlon handle?
William Francis Conlon focuses on formation, criminal defense, employment, business, class action. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has William Francis Conlon practiced law?
William Francis Conlon has 56+ years of legal experience and has been licensed since 1970.
Where did William Francis Conlon go to law school?
William Francis Conlon earned their education at (J.D., 1970); (A.B., 1967).
How can I contact William Francis Conlon for a consultation?
You can contact William Francis Conlon 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 William Francis Conlon received?
William Francis Conlon's notable recognition includes: AV Preeminent.

Education

J.D.
University of Illinois College of Law
- 1970
A.B.
Indiana University
- 1967

Awards

AV Preeminent

Bar Admissions

Illinois
Admitted: 1970
Iowa
Admitted: 1970
U.S. District Court, Eastern District of Michigan
Admitted: 1970
U.S. Supreme Court, U.S. District Court, Northern District of Illinois including Trial Bar and U.S.
Admitted: 1975
U.S. District Court, Northern District of Illinois, including Trial Bar U.S. District Court, Central
Admitted: 1982

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