Department profile
Katten

Intellectual Property: Trademark, Copyright & Trade Secrets

USA Guide 2026 : Illinois


Katten

Rankings

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

Intellectual Property: Trademark, Copyright & Trade Secrets - Illinois

Band 1

Band 1


What the Team is Known For
Katten provides comprehensive support to household names across all areas of IP work. It has longstanding experience acting for plaintiffs and defendants in ANDA litigation. The team also offers adept assistance for copyright and trademark infringement claims. It regularly acts for clients in the retail, manufacturing and electronics sectors.

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 respondentUSA
  • The team has extensive experience, expertise and practical knowledge.

    Intellectual Property: Trademark, Copyright & Trade Secrets respondentUSA
  • Katten 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 respondentUSA
  • Even 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 respondentUSA
  • The 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 1Floyd A Mandell
    Band 1Floyd A Mandell

    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 respondentUSA
    • Floyd has very good judgment and sees the bigger picture strategically.

      Intellectual Property: Trademark, Copyright & Trade Secrets respondentUSA
    • Floyd's wisdom and experience in his field is as good as it gets.

      Intellectual Property: Trademark, Copyright & Trade Secrets respondentUSA
    • Floyd is a gentleman and a scholar - one of the finest attorneys in the field.

      Intellectual Property: Trademark, Copyright & Trade Secrets respondentUSA
    • Floyd is an incredibly strong, elite attorney.

      Intellectual Property: Trademark, Copyright & Trade Secrets respondentUSA
  • Band 2Kristin J. Achterhof
    Band 2Kristin J. Achterhof

    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 respondentUSA
    • Kristin will always take a pragmatic approach that is commercially viable for the client.

      Intellectual Property: Trademark, Copyright & Trade Secrets respondentUSA
  • Band 4Carolyn Passen
    Band 4Carolyn Passen

    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 respondentUSA
    • Carolyn 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 watchJulia Mazur
    Associates to watchJulia Mazur

    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)

Illinois

  • Profile image of Floyd A Mandell

    Floyd A Mandell

    Intellectual Property: Trademark, Copyright & Trade Secrets

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  • Profile image of Kristin J. Achterhof

    Kristin J. Achterhof

    Intellectual Property: Trademark, Copyright & Trade Secrets

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  • Profile image of Carolyn Passen

    Carolyn Passen

    Intellectual Property: Trademark, Copyright & Trade Secrets

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  • Profile image of Julia Mazur

    Julia Mazur

    Intellectual Property: Trademark, Copyright & Trade Secrets

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Members

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