Jeffrey T. Gendzwill

Co-Chair, Patent Prosecution

Jeff is a registered patent attorney who concentrates his practice on patent-related matters with a focus on client counseling, portfolio strategy and management, U.S. and foreign patent preparation/prosecution, and post-grant proceedings. His practice spans a wide range of technologies with a focus on the chemical and life sciences industry including chemical engineering, chemistry, clean energy, and nutritional/pharmaceutical supplements, as well as mechanical and biomechanical engineering, nanotechnology, physics, composite materials, and medical devices. Jeff also has extensive experience preparing complex patentability, invalidity, non-infringement, and freedom-to-operate opinions, as well as state-of-the-art analyses. He has represented multiple clients in disputes, both offensive and defensive, before the Patent Trial and Appeal Board (PTAB). 

Jeff is a frequent speaker on many IP law issues including joint infringement jurisprudence and the post-Helsinn on-sale bar. He has recently presented Filing Strategies in China: Don’t Forget the Utility Model; Patent Monetization: Options in Patent Sales; and Streamlined PCT Prosecution Strategies to legal teams at many of his industry-leading chemical and packaging clients.

He earned his J.D. at the University of Detroit-Mercy School of Law, where he graduated magna cum laude, and his B.S.Ch.E. from the University of Michigan-Ann Arbor. Before launching his legal career, Jeff worked in the automotive industry as a chemical engineer and as a technical sales engineer for several Fortune 500 companies including 3M Company and Henkel International.




Cozen O’Connor Intellectual Property Attorneys Recognized by IAM Patent 1000

July 22, 2022

IAM Patent 1000 has named Frank Abramonte, Thomas Fisher, Keith Fredlake, Jeffrey Gendzwill, and Edward Weisz to their 2022 list.

Cozen O’Connor Bolsters Washington, D.C., Intellectual Property Practice with the Addition of Jeffrey T. Gendzwill and Keith D. Fredlake

October 26, 2020

Both Gendzwill and Fredlake join from Kilpatrick Townsend and will become members of the firm’s growing Intellectual Property practice that comprises nearly 50 attorneys representing national and international corporate clients from startups to multinational companies.


Important Changes to European Patent Practice [Alert]

October 13, 2022

The European Patent Office is replacing the existing regional patent system with a new Unitary Patent system that has enforcement throughout Europe.

IP Maintenance Payments for Russian Rights

May 12, 2022

This May, OFAC issued a new General License authorizing certain transactions related to patents, trademarks, and copyrights otherwise prohibited by sanctions.


  • University of Detroit Mercy School of Law, J.D., magna cum laude, 2004
  • University of Michigan, B.S.Ch.E, 1993

Awards & Honors

IAM Patent 1000 - 2022

  • District of Columbia
  • Michigan
  • U.S. District Court -- Eastern District of Michigan
  • U.S. Patent and Trademark Office