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.
Intellectual Property Litigation & More Attorney · Serving Chicago, IL · 31+ Years Experience
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.
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About 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
- 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 Legal Practice
Each practice area below reflects the types of cases Russell E. Cass handles, with a practical overview of what that area of law involves and how it may apply to your situation in Chicago.
Patent Law in Chicago
Russell E. Cass is one of 20,632 patent attorneys indexed nationally. Browse patent attorneys in Illinois →
Intellectual Property in Chicago
IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.
Russell E. Cass is one of 105,285 ip attorneys indexed nationally. Browse ip attorneys in Illinois →
Appellate Practice in Chicago
Appellate attorneys for civil and criminal appeals at state and federal court.
Russell E. Cass is one of 85,572 appellate attorneys indexed nationally. Browse appellate attorneys in Illinois →
Jurisdictional Context
Why Local Counsel Matters in Chicago
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.
Chicago Courts and Legal Process
Choosing a Chicago-based attorney means your counsel already knows the local docketing timelines, preferred filing formats, and how individual judges typically rule on procedural motions — details that only come from practicing in this jurisdiction day after day. That local familiarity can translate to better strategy, faster filings, and fewer costly surprises.
Looking for additional Illinois attorneys? Browse all attorneys in Chicago or all attorneys in Illinois.
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Professional Profile
Why Clients in Chicago Choose Russell E. Cass
Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish Russell E. Cass's practice in the field of patent, ip, and appellate.
Decade-Tested Legal Experience
Russell E. Cass brings 31+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.
Multi-State Bar Admission
Licensed in New York, U.S. District Court, Northern District of Illinois, and Illinois, Russell E. Cass can represent clients in cases that span state lines or require counsel in multiple jurisdictions.
Broad Practice Area Coverage
Covering patent, ip, and appellate, Russell E. Cass can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.
Local Presence in Chicago
A Chicago-based practice means Russell E. Cass attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.
Case Types
Common Legal Issues Russell E. Cass Handles in Chicago
Below is a representative sample of the types of matters Russell E. Cass has experience with under Illinois law. If your situation involves one of these case categories, this attorney may be well positioned to help you understand your options.
This list is illustrative, not exhaustive. Contact Russell E. Cass directly to discuss the specifics of your situation.
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How People Find Russell E. Cass Online
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Russell E. Cass's Practice Areas & Specializations
Education & Law School Background
Bar Admissions & Licensed Jurisdictions
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