Jason S. Kray is Chair of MBHB’s Medical Device & Diagnostics Practice Group. He specializes in helping medical device companies build and manage patent portfolios. Clients across other technology areas, including electrical, mechanical, electromechanical, software and computer technologies, also turn to Mr. Kray to maximize the value and commercial relevance of their intellectual property portfolios.

Mr. Kray builds and manages patent portfolios for clients ranging from multinational corporations to individual inventors. His work includes:

  • Drafting and prosecuting domestic, foreign and international patent applications.
  • Conducting interviews with examiners at the United States Patent and Trademark Office.
  • Drafting and filing appeal briefs.
  • Conducting oral arguments before the Patent Trial and Appeal Board.
  • Prosecuting reissue and reexamination applications.

Additionally, Mr. Kray prepares patentability, freedom to operate, and validity opinions for clients. He also works with product development teams to perform landscape analyses and identify intellectual property opportunities for new products and product enhancements.

Mr. Kray has also supported clients in litigation. His litigation experience includes drafting complaints, motions, memoranda and jury instructions; conducting discovery; and arguing motions. His litigation experience dovetails with his prosecution experience, facilitating his ability to procure appropriately broad, defensible patents on the one hand, and comprehensively evaluate patents asserted in litigation on the other hand.

Outside of work, he plays organized hockey and coaches his children’s baseball, soccer and hockey teams.

  • J.D., The John Marshall Law School,

    magna cum laude

  • B.S., University of Wisconsin-Madison,

    Electrical Engineering

Bar Admissions
  • Illinois
  • U.S. Patent & Trademark Office
  • American Bar Association
  • Chicago Bar Association
  • Illinois State Bar Association
  • Intellectual Property Law Association of Chicago


  • Managed multiple patent portfolios across 10 countries for a Fortune 500 medical device company.
  • Organized global prosecution of more than 100 patent portfolio families and more than 1,000 U.S. and national phase applications for a medical device company. This work helped the company secure patents that allow it to compete in the market and protect products that generate millions of dollars in annual revenue.
  • Supported a startup’s patent portfolio development, which helped it secure millions of dollars in venture capital financing.