Mr. Keenan is active in a variety of areas within intellectual property law, with particular emphasis in patent prosecution, patent litigation, and counseling. Mr. Keenan has experience prosecuting and litigating utility and design patent applications in a variety of industries and technological areas including athletic equipment, footwear, construction machinery, wallboard manufacturing systems, safety equipment, medical devices, pharmaceuticals, business methods, filtration systems, automobile tires, control systems, electrical connectors, and engines.

Mr. Keenan has experience preparing and prosecuting U.S. and international patents as well as consulting and rendering opinions on patentability, infringement, validity, and enforceability. He also has served as counsel in patent litigations in U.S. federal courts and has experience in all aspects of litigation including discovery, motion practice, pre-trial efforts, trial, and appeal. Furthermore, he has experience drafting and negotiating agreements relating to intellectual property, including patent and technology licenses.

Mr. Keenan has been named an Illinois Super Lawyers Rising Star each year since 2012. The Rising Star list represents the top five percent of attorneys in each state.

Before joining Banner & Witcoff, Mr. Keenan gained valuable experience as an associate at an international intellectual property law firm where he focused on all aspects of intellectual property law. Prior to joining the firm, Mr. Keenan worked for USG Corporation as a project engineer in a wallboard manufacturing facility and he interned with The Boeing Company and Rockwell Automation, Inc.

Mr. Keenan earned a Bachelor of Science in Engineering, magna cum laude, from the University of Michigan, where he majored in Mechanical Engineering. He received his J.D. degree from Chicago-Kent College of Law in 2007. During law school, he was a member of The Chicago-Kent Law Review and served as a judicial extern to the Honorable Wayne R. Andersen, United States District Court judge for the Northern District of Illinois. Mr. Keenan is admitted to practice before the Supreme Court of Illinois, and the U.S. District Court for the Northern District of Illinois.

He is also registered to practice before the U.S. Patent and Trademark Office as a patent attorney.

Mr. Keenan practices in the Chicago office of Banner & Witcoff, Ltd.