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Christopher J. (“CJ”) Fahy, J.D. | Counsel



Phone: 312-404-2330

Fax: 312-614-1873

Education and Honors

University of Wisconsin Law School,

J.D., cum laude.

University of Wisconsin,


Bar and Court Admissions



U.S. Court of Appeals for the Federal Circuit

U.S. Court of Appeals for the Seventh Circuit

U.S. District Courts for the Eastern District of Michigan, Texas, and Wisconsin, Northern District of Florida, and Illinois, and Western District of Wisconsin.

CJ is an experienced IP counselor and litigator having litigated patent, copyright, and trade secret cases in federal courts across the country.

CJ has over fifteen years of experience litigating complex intellectual property matters (including defending against accusations of design patent infringement) for corporate clients. His experience includes representing major brands in the specialty retail and fashion industry. For example, he has been co-lead litigation counsel for an international sportswear brand in a trademark dispute, litigation counsel for a fashion brand in a dispute over the trade dress of handbags and travel bags, and outside IP counsel to a specialty retailer of outdoor recreation merchandise. 

CJ has been a lead outside IP counsel for the U.S. subsidiary of a large international manufacturing company and worked closely with senior executives to provide counsel on patent, trademark, copyright, and trade secret related policies, procurement, litigation, and training.

CJ has also counseled an international manufacturing company from start-up to global leader in the industry on offensive and defensive, U.S. and international, patent matters including through the acquisition of a competitor’s business and intellectual property.

CJ has been lead IP litigation counsel in patent matters. He has been trial counsel in multiple inter partes review (IPR) proceedings before the Patent Trial and Appeal Board (PTAB) at the United States Patent and Trademark Office (USPTO), as both patent owner and petitioner, and argued appeals at the United States Court of Appeals for the Federal Circuit.

CJ has been lead litigation counsel in a trademark and right of publicity dispute in Wisconsin Circuit Court and co-lead litigation counsel in a trademark dispute in the Northern District of Illinois.  

CJ has secured temporary restraining orders and preliminary injunction against multiple manufacturers and sellers infringing trade dress and developed successful alternative fee arrangements for a variety of IP matters.

Work Experience 

  • K&L Gates LLP, Chicago, IL 

  • Quarles & Brady LLP, Chicago, IL 

  • K&L Gates LLP (f.k.a. Bell, Boyd & Lloyd LLP), Chicago, IL

  • ABB, New Berlin, WI/Vӓsterås, Sweden  



  • Northwestern University, Kellogg School of Management, Quarles & Brady Leadership Program (2016).

  • Illinois Super Lawyers – Rising Stars Edition (2012–2017: IP Litigation).


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