Atty. Dale Edward Thomas

Atty. Dale Edward Thomas

Dale Edward Thomas is a lawyer practicing economic, antitrust/competition, energy and 5 other areas of law. Dale received a A.B. degree from Princeton University in 1969, and has been licensed for 51 years.

Chicago Chicago 51 yrs experience 51 year
Call (312) 456-8427 Book Appointment

Profile Summary

About Dale Edward Thomas at a glance

Dale Edward Thomas is a Senior Counsel based in Chicago, Illinois, practicing at Sidley Austin LLP. They have 51+ years of legal experience, licensed to practice since 1975. Their practice focuses on patent, ip, litigation, and energy. Admitted to practice in Illinois (1975), U.S. Court of Appeals, Second Circuit (1975), U.S. Court of Appeals, District of Columbia Circuit (1986), and U.S. District Court, Northern District of Illinois (1987). Educated at Yale University Law School (J.D., 1974) and Princeton University (A.B., 1969). Recognitions include AV Preeminent. Serands clients in Chicago, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Dale Edward Thomas is a lawyer practicing economic, antitrust/competition, energy and 5 other areas of law
  • Dale received a A.B. degree from Princeton University in 1969, and has been licensed for 51 years
  • Dale practices at Sidley Austin LLP in Chicago, IL

Practice Areas Explained

Dale Edward Thomas's Areas of Practice

Each practice area below reflects the types of cases Dale Edward Thomas handles, with a brief overview of what that area of law covers.

Patent Law

Dale Edward Thomas is one of 20,749 patent attorneys indexed nationally. Browse patent attorneys in Illinois →

Intellectual Property

IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.

Dale Edward Thomas is one of 106,079 ip attorneys indexed nationally. Browse ip attorneys in Illinois →

Civil Litigation

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

Dale Edward Thomas is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in Illinois →

Energy & Utilities Law

Energy attorneys for oil & gas, renewables, utility regulation, and energy sector transactions.

Dale Edward Thomas is one of 36,230 energy attorneys indexed nationally. Browse energy 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 Dale Edward Thomas

Where is Dale Edward Thomas's law office located?
Dale Edward Thomas'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 Dale Edward Thomas handle?
Dale Edward Thomas focuses on patent, ip, litigation, energy. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has Dale Edward Thomas practiced law?
Dale Edward Thomas has 51+ years of legal experience and has been licensed since 1975.
Where did Dale Edward Thomas go to law school?
Dale Edward Thomas earned their education at (J.D., 1974); (A.B., 1969).
How can I contact Dale Edward Thomas for a consultation?
You can contact Dale Edward Thomas 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 Dale Edward Thomas received?
Dale Edward Thomas's notable recognition includes: AV Preeminent.

Education

J.D.
Yale University Law School
- 1974
A.B.
Princeton University
- 1969

Awards

AV Preeminent

Bar Admissions

Illinois
Admitted: 1975
U.S. Court of Appeals, Second Circuit
Admitted: 1975
U.S. Court of Appeals, District of Columbia Circuit
Admitted: 1986
U.S. District Court, Northern District of Illinois
Admitted: 1987

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