Atty. Jonathon Robert Treat

Atty. Jonathon Robert Treat

Jonathon Robert Treat is a lawyer practicing antitrust / trade law, advertising, real estate and 1 other area of law. Jonathon received a B.S. degree from Illinois State University in 1999, and has been licensed for 23 years.

Chicago Chicago 23 Years Experience 23 year
Call (312) 535-4941

Profile Summary

About Jonathon Robert Treat at a glance

Jonathon Robert Treat is a Staff Attorney based in Chicago, Illinois, practicing at Winston & Strawn LLP. They have 23+ years of legal experience, licensed to practice since 2003. Their practice focuses on business, real estate, litigation, and entertainment. Admitted to practice in Illinois (2003) and U.S. District Court, Northern District of Illinois (2004). Educated at John Marshall Law School (J.D., 2003) and Illinois State University (B.S., 1999). Serves clients in Chicago, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Jonathon Robert Treat is a lawyer practicing antitrust / trade law, advertising, real estate and 1 other area of law
  • Jonathon received a B.S. degree from Illinois State University in 1999, and has been licensed for 23 years
  • Jonathon practices at Winston & Strawn LLP in Chicago, IL

Practice Areas Explained

Jonathon Robert Treat's Areas of Practice

Each practice area below reflects the types of cases Jonathon Robert Treat handles, with a brief overview of what that area of law covers.

Business & Corporate Law

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

Jonathon Robert Treat is one of 452,854 business attorneys indexed nationally. Browse business attorneys in Illinois →

Real Estate Law

Real estate attorneys handle home purchases, sales, commercial transactions, title disputes, and landlord-tenant matters.

Jonathon Robert Treat is one of 286,061 real estate attorneys indexed nationally. Browse real estate attorneys in Illinois →

Civil Litigation

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

Jonathon Robert Treat is one of 409,070 litigation attorneys indexed nationally. Browse litigation attorneys in Illinois →

Entertainment & Sports Law

Entertainment lawyers for music, film, sports contracts, talent representation, and IP licensing.

Jonathon Robert Treat is one of 41,102 entertainment attorneys indexed nationally. Browse entertainment 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 venue, 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 Jonathon Robert Treat

Where is Jonathon Robert Treat's law office located?
Jonathon Robert Treat's law practice is located in Chicago, Illinois. The firm is Winston & Strawn LLP. You can contact the office directly through this profile page.
What practice areas does Jonathon Robert Treat handle?
Jonathon Robert Treat focuses on business, real estate, litigation, entertainment. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has Jonathon Robert Treat practiced law?
Jonathon Robert Treat has 23+ years of legal experience and has been licensed since 2003.
Where did Jonathon Robert Treat go to law school?
Jonathon Robert Treat earned their education at (J.D., 2003); (B.S., 1999).
How can I contact Jonathon Robert Treat for a consultation?
You can contact Jonathon Robert Treat 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 Marshall Law School
- 2003
B.S.
Illinois State University
- 1999

Bar Admissions

Illinois
Admitted: 2003
U.S. District Court, Northern District of Illinois
Admitted: 2004

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