Atty. Floyd A. Mandell
Floyd Mandell is the national co-chair and founder of the firm's Intellectual Property department. He has represented some of the world’s most recognizable companies in intellectual property litigation.
Profile Summary
About Floyd A. Mandell at a glance
Floyd A. Mandell is a trademark and ip attorney based in Chicago, Illinois, practicing at Katten. Educated at University of Illinois Chicago (J.D., 1973). Recognitions include Best Lawyers in America — Litigation - Intellectual Property (2026), Best Lawyers in America — Trademark 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
- Floyd Mandell is the national co-chair and founder of the firm's Intellectual Property department
- He has represented some of the world’s most recognizable companies in intellectual property litigation
- Few other lawyers have handled as many high-profile cases over the past 20 years involving copyrights, trademarks, trade secrets, trade dress, false advertising and defamation
- He has been lead counsel in more than 40 published decisions, many involving novel or cutting-edge issues
- On more than one occasion, Floyd has litigated cases with more than $1 billion at stake for his clients
- Floyd has served as lead trial counsel for globally recognized brands in technology (Microsoft Corporation, Yahoo!, Intel, Panasonic, Sanyo, Stripe), food and beverage (PepsiCo/Gatorade, Boar’s Head, Cracker Barrel, Planet Hollywood), retail and fashion (Forever 21, Arcadia Group Limited and its Topshop brand, Tommy Hilfiger, ASICS, Fruit of the Loom), media (Cumulus Media; Westwood One; Times Mirror, Inc.), entertainment (Universal Studios; Universal Music Group; Home Box Office, Inc.; E!
- Entertainment Television, LLC; Scripps Network), pharma and health care (Bausch & Lomb) and beyond
- Floyd's client relationships frequently span many years, and leading companies turn to him again and again for his business-focused guidance
- They trust him with their most significant legal problems
- Usually, these are disputes that threaten a famous brand, like the trademark action against PepsiCo over Gatorade's use of a slogan referring to it as "The Sports Fuel Company
- Floyd earned a summary judgment victory for PepsiCo, which had been found liable for millions of dollars in a previous similar case
- Similarly, Floyd secured a summary judgment victory for Microsoft, affirmed on appeal, involving a claimed infringement arising out of its X-Box product.Floyd is consistently ranked among the top intellectual property litigators in the United States by Chambers USA, Legal 500, Law360, the National Law Journal, and other outlets
- Recognized as a skilled mediator and arbitrator, he is a member of the Panel of Neutrals for the Alternative Dispute Resolution Program sponsored by the International Trademark Association
- He is on the list of mediators/arbitrators recommended by the US District Court for the Northern District of Illinois for Lanham Act cases
Practice Areas Explained
Floyd A. Mandell's Areas of Practice
Each practice area below reflects the types of cases Floyd A. Mandell handles, with a brief overview of what that area of law covers.
Floyd A. Mandell is one of 23,222 trademark attorneys indexed nationally. Browse trademark attorneys in Illinois →
IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.
Floyd A. Mandell 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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