
Intellectual Property: Trademark, Copyright & Trade Secrets
USA Guide 2026 : Illinois
Rankings

Ranked Individuals
Ranked Individuals
About
Provided by Katten
Katten's Intellectual Property team provides a complete range of services for domestic and international clients in all major industries seeking to protect and benefit from their intellectual property and to defend claims asserted by others. Inventors and corporations alike turn to us for counsel regarding their innovations in biotechnology and life sciences, electrical and electronic systems, computer hardware and software, e-commerce and business methods, telecommunications, product design, and mechanical systems.
Katten's seasoned attorneys develop, enforce, protect and defend our clients' patent, trademark, copyright and trade secret rights in jurisdictions across the United States and abroad. We partner with clients to develop global strategies and programs to safeguard and maximize the value of their intellectual property, and to audit their intellectual property assets, including domestic and international licensing and transfers of technology, to ensure that these assets are correctly identified and properly protected. We manage our clients' intellectual property portfolios, including registration and enforcement of patents, trademarks and copyrights worldwide, and administration of intellectual property agreements. Additionally, we have considerable experience representing clients in high-profile lawsuits when their most valuable intellectual property is at stake.
Industries (22)
- Pharmaceuticals & Life Sciences
- Software & Computer Services
- Hardware & Electronics
- Media
- Insurance
- Fashion
- Retail
- Technology, Hardware & Electronics
- Telecommunications
- Consumer Product Manufacturing
- Banks
- Financial Services
- Sports
- Travel & Leisure
- Transportation
- Charities/Not for Profit
- Chemicals
- Commercial & Professional Services
- Energy
- Food & Drink Producers
- Health Care
- Private Clients/Individuals
Chambers Review
Provided by Chambers
Work Highlights
Provided by Chambers
Katten defended patent docketing contractor CPA Global against claims of damages in excess of $100 million due to loss of patent rights caused by docketing of an incorrect date in a patent application.
Strengths
Provided by Chambers
Katten's IP group is filled with business subject matter experts that consistently offer effective advice.
Intellectual Property: Trademark, Copyright & Trade Secrets respondentUSAThe team has extensive experience, expertise and practical knowledge.
Intellectual Property: Trademark, Copyright & Trade Secrets respondentUSAKatten has a deep bench of talented attorneys with a ton of trial experience, but at the same time business acumen.
Intellectual Property: Trademark, Copyright & Trade Secrets respondentUSAEven when the issue is unusual, nuanced, or outside the norm, Katten consistently brings a thoughtful and well-reasoned approach. That reliability, no matter how quirky the issue, is a real strength.
Intellectual Property: Trademark, Copyright & Trade Secrets respondentUSAThe Katten team not only knows the attributes necessary to have a successful contract, but also the implicit attributes to make the deal really good.
Intellectual Property: Trademark, Copyright & Trade Secrets respondentUSA
Notable Practitioners
Provided by Chambers
Band 1 
Band 1 
Floyd A Mandell
Floyd Mandell has a strong reputation as a trademark litigator and is a go-to attorney for complex infringement claims. He frequently acts in disputes involving advertising and online platforms. Floyd is both a consummate professional with a deep level of expertise and experience as well as a great person who makes clients feel comfortable and valued.
Intellectual Property: Trademark, Copyright & Trade Secrets respondentUSAFloyd has very good judgment and sees the bigger picture strategically.
Intellectual Property: Trademark, Copyright & Trade Secrets respondentUSAFloyd's wisdom and experience in his field is as good as it gets.
Intellectual Property: Trademark, Copyright & Trade Secrets respondentUSAFloyd is a gentleman and a scholar - one of the finest attorneys in the field.
Intellectual Property: Trademark, Copyright & Trade Secrets respondentUSAFloyd is an incredibly strong, elite attorney.
Intellectual Property: Trademark, Copyright & Trade Secrets respondentUSA
Band 2 
Band 2 
Kristin J. Achterhof
Kristin Achterhof cochairs the firm's IP litigation group and is noted for her adroit handling of high-value trademark and copyright disputes for clients from a range of industries. Kristin is a terrific attorney and very smart.
Intellectual Property: Trademark, Copyright & Trade Secrets respondentUSAKristin will always take a pragmatic approach that is commercially viable for the client.
Intellectual Property: Trademark, Copyright & Trade Secrets respondentUSA
Band 4 
Band 4 
Carolyn Passen
Carolyn Passen is counsel at the firm and regularly handles complex trademark and copyright disputes on behalf of well-known clients.
Carolyn is competent, diligent and dedicated.
Intellectual Property: Trademark, Copyright & Trade Secrets respondentUSACarolyn is a fantastic lawyer and asset on any case. She is strategic, persistent and very aware of client needs.
Intellectual Property: Trademark, Copyright & Trade Secrets respondentUSA
Associates to watch 
Associates to watch 
Julia Mazur
Julia Mazur is an associate with a wide range of experience in trademark, trade dress and trade secret matters.
Julia is an extremely sharp and bright IP attorney who is a pleasure to work with. She understands the needs of the client because she tries hard to get to know the company, the people, and their needs.
Intellectual Property: Trademark, Copyright & Trade Secrets respondentUSA
Ranked Individuals at Katten (4)
Members
Provided by Katten

Kristin J Achterhof

Brian Sodikoff

Stephen P Benson

Michael A Dorfman


Julia Mazur
View profile of Julia Mazur
Carolyn Passen
View profile of Carolyn Passen
Kristin J. Achterhof
View profile of Kristin J. Achterhof
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