Atty. Constantine Koutsoubas

Atty. Constantine Koutsoubas

Constantine Koutsoubas is a lawyer practicing intellectual property and technology litigation, patents. Constantine received a B.S. degree from Northwestern University in 2001, and has been licensed for 19 years.

Chicago Chicago 19 Years Experience 19 year
Call (312) 535-4941

Profile Summary

About Constantine Koutsoubas at a glance

Constantine Koutsoubas is an Associate based in Chicago, Illinois, practicing at Kelley Drye & Warren LLP. They have 19+ years of legal experience, licensed to practice since 2007. Their practice focuses on patent and ip. Admitted to practice in Illinois (2007), U.S. District Court, Northern District of Illinois (2007), and U.S. Court of Appeals, Federal Circuit (2010). Educated at University of Chicago Law School (J.D., 2007) and Northwestern University (B.S. Chemical, 2001). Serves clients in Chicago, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Constantine Koutsoubas is a lawyer practicing intellectual property and technology litigation, patents
  • Constantine received a B.S. degree from Northwestern University in 2001, and has been licensed for 19 years
  • Constantine practices at Kelley Drye & Warren LLP in Chicago, IL

Practice Areas Explained

Constantine Koutsoubas's Areas of Practice

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

Patent Law

Constantine Koutsoubas is one of 18,874 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.

Constantine Koutsoubas is one of 94,505 ip attorneys indexed nationally. Browse ip 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 Constantine Koutsoubas

Where is Constantine Koutsoubas's law office located?
Constantine Koutsoubas's law practice is located in Chicago, Illinois. The firm is Kelley Drye & Warren LLP. You can contact the office directly through this profile page.
What practice areas does Constantine Koutsoubas handle?
Constantine Koutsoubas focuses on patent, ip. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has Constantine Koutsoubas practiced law?
Constantine Koutsoubas has 19+ years of legal experience and has been licensed since 2007.
Where did Constantine Koutsoubas go to law school?
Constantine Koutsoubas earned their education at (J.D., 2007); (B.S. Chemical, 2001).
How can I contact Constantine Koutsoubas for a consultation?
You can contact Constantine Koutsoubas 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.
University of Chicago Law School
- 2007
B.S. Chemical
Northwestern University
- 2001

Bar Admissions

Illinois
Admitted: 2007
U.S. District Court, Northern District of Illinois
Admitted: 2007
U.S. Court of Appeals, Federal Circuit
Admitted: 2010

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