Atty. Thomas G. Pasternak
A former chief patent counsel to a Fortune 500 communications company with deep first chair trial experience, Thomas Pasternak focuses his practice on patent, trademark, and trade secret litigation, licensing, and prosecution. He protects and defends his clients’ intellectual property rights in district courts throughout the United States, the International Trade Commission (ITC), the Patent Trial and Appeal Board (PTAB), and the Federal Circuit and Seventh Circuit Courts of Appeal.
Profile Summary
About Thomas G. Pasternak at a glance
Thomas G. Pasternak is a ip attorney based in Chicago, Illinois, practicing at Taft. Educated at The University of Michigan Law School (J.D., 1991). Recognitions include Best Lawyers in America — Litigation - Intellectual Property (2026), Best Lawyers in America — Patent Law (2026), and Best Lawyers in America — Additional Areas of Practice: (2026). Serands clients in Chicago, IL and the surrounding metropolitan area.
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About
- A former chief patent counsel to a Fortune 500 communications company with deep first chair trial experience, Thomas Pasternak focuses his practice on patent, trademark, and trade secret litigation, licensing, and prosecution
- He protects and defends his clients’ intellectual property rights in district courts throughout the United States, the International Trade Commission (ITC), the Patent Trial and Appeal Board (PTAB), and the Federal Circuit and Seventh Circuit Courts of Appeal
- He serves clients in the ecommerce, communications, biopharma, and consumer products sectors
- A registered patent lawyer with a B.S. in chemical engineering from the United States Naval Academy, Thomas has a broad technology experience and has written and prosecuted hundreds of patent applications covering such technology as electrical engineering, chemical products, and medical devices
Practice Areas Explained
Thomas G. Pasternak's Areas of Practice
Each practice area below reflects the types of cases Thomas G. Pasternak handles, with a brief overview of what that area of law covers.
IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.
Thomas G. Pasternak is one of 106,079 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 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.
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