Atty. Russell E. Cass

Atty. Russell E. Cass

Russell E. Cass is a lawyer practicing patent application, intellectual property litigation, patent and intellectual property rights appeals and 1 other area of law.

Chicago Chicago 31 Years Experience 31 year
Call (312) 442-0265

Profile Summary

About Russell E. Cass at a glance

Russell E. Cass is a Partner based in Chicago, Illinois, practicing at Sidley Austin LLP. They have 31+ years of legal experience, licensed to practice since 1995. Their practice focuses on patent, ip, and appellate. Admitted to practice in New York (1995), U.S. District Court, Northern District of Illinois (1997), Illinois (1998), and U.S. Court of Appeals, Federal Circuit (2002). Educated at George Washington University Law School (J.D., 1994) and University of California at Los Angeles (B.S. Electrical, 1990). Serves clients in Chicago, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Russell E. Cass is a lawyer practicing patent application, intellectual property litigation, patent and intellectual property rights appeals and 1 other area of law
  • Russell received a B.S. degree from University of California at Los Angeles in 1990, and has been licensed for 31 years
  • Russell practices at Sidley Austin LLP in Chicago, IL

Practice Areas Explained

Russell E. Cass's Areas of Practice

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

Patent Law

Russell E. Cass 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.

Russell E. Cass is one of 94,505 ip attorneys indexed nationally. Browse ip attorneys in Illinois →

Appellate Practice

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

Russell E. Cass is one of 77,587 appellate attorneys indexed nationally. Browse appellate 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 Russell E. Cass

Where is Russell E. Cass's law office located?
Russell E. Cass'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 Russell E. Cass handle?
Russell E. Cass focuses on patent, ip, appellate. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has Russell E. Cass practiced law?
Russell E. Cass has 31+ years of legal experience and has been licensed since 1995.
Where did Russell E. Cass go to law school?
Russell E. Cass earned their education at (J.D., 1994); (B.S. Electrical, 1990).
How can I contact Russell E. Cass for a consultation?
You can contact Russell E. Cass 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.
George Washington University Law School
- 1994
B.S. Electrical
University of California at Los Angeles
- 1990

Bar Admissions

New York
Admitted: 1995
U.S. District Court, Northern District of Illinois
Admitted: 1997
Illinois
Admitted: 1998
U.S. Court of Appeals, Federal Circuit
Admitted: 2002

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