HFZ is a boutique IP law firm located in the heart of Chicago, specializing in United States and foreign patent prosecution and counseling.  Our team of patent practitioners includes many individuals having years of industry experience as engineers and inventors prior to becoming patent attorneys.  A combination of significant real world engineering experience and legal experience results in a highly focused and skilled team of practitioners who provide services to numerous Fortune 500 technology companies.

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Hanley, Flight & Zimmerman, LLC

Tom Koltun

Jim Flight

David Mittel

Mark Zimmerman

Matthew C. Mcneill

The Legal Team at Hanley, Flight & Zimmerman, LLC is dedicated to providing expert patent prosecution and counseling services for a diverse clientele, including Fortune 500 technology companies. Comprised of seasoned legal assistants and a former Chief Legal Officer, the team leverages their robust engineering backgrounds to navigate complex intellectual property challenges, ensuring effective protection and management of clients' innovations on both domestic and international fronts.

Legal Team

Patent Law Team

Leadership Team

Legal Team

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Patent Law Team

Leadership Team