Atty. William Gibbs Sullivan

Atty. William Gibbs Sullivan

William Gibbs Sullivan is a lawyer practicing administrative law, admiralty & maritime, antitrust & trade law and 1 other area of law. William has been licensed for 48 years.

Chicago Chicago 48 yrs experience 48 year
Call (312) 481-8617 Book Appointment

Profile Summary

About William Gibbs Sullivan at a glance

William Gibbs Sullivan is an Attorney based in Chicago, Illinois, practicing at Clark Hill PLC. They have 48+ years of legal experience, licensed to practice since 1978. Their practice focuses on government, appellate, and maritime. Admitted to practice in Illinois (1978). Serands clients in Chicago, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • William Gibbs Sullivan is a lawyer practicing administrative law, admiralty & maritime, antitrust & trade law and 1 other area of law
  • William has been licensed for 48 years
  • William practices at Clark Hill PLC in Chicago, IL

Practice Areas Explained

William Gibbs Sullivan's Areas of Practice

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

Government & Administrative Law

Attorneys for administrative law, agency hearings, government contracts, licensing, and public benefits.

William Gibbs Sullivan is one of 132,225 government attorneys indexed nationally. Browse government attorneys in Illinois →

Appellate Practice

Appellate attorneys for civil and criminal appeals at state and federal court.

William Gibbs Sullivan is one of 86,319 appellate attorneys indexed nationally. Browse appellate attorneys in Illinois →

Maritime & Admiralty Law

Maritime attorneys for Jones Act claims, longshore injury, cruise ship cases, and offshore matters.

William Gibbs Sullivan is one of 11,568 maritime attorneys indexed nationally. Browse maritime 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 Gibbs Sullivan

Where is William Gibbs Sullivan's law office located?
William Gibbs Sullivan's law practice is located in Chicago, Illinois. The firm is Clark Hill PLC. You can contact the office directly through this profile page.
What practice areas does William Gibbs Sullivan handle?
William Gibbs Sullivan focuses on government, appellate, maritime. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has William Gibbs Sullivan practiced law?
William Gibbs Sullivan has 48+ years of legal experience and has been licensed since 1978.
How can I contact William Gibbs Sullivan for a consultation?
You can contact William Gibbs Sullivan 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.

Bar Admissions

Illinois
Admitted: 1978

Reviews

These reviews belong to platform users; they do not constitute advertisement or promotion for the attorney. Opinions are published for informational purposes only.

No reviews yet.