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 Leadership Team at Hanley, Flight & Zimmerman, LLC drives the firm's strategic vision, ensuring alignment between legal expertise and industry innovation. Comprising seasoned professionals with extensive backgrounds in engineering, legal practice, and corporate leadership, this team fosters collaboration and guides the firm in delivering exceptional intellectual property services to clients, particularly those in the technology sector. Their collective experience shapes the firm's approach to patent prosecution and counseling, positioning HFZ as a trusted partner for Fortune 500 companies.

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Patent Law Team

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Leadership Team

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Patent Law Team

Legal Team