Jeffrey Chelstrom is an intellectual property attorney with more than 15 years of experience assisting clients in patent preparation and prosecution, managing worldwide patent portfolios, and counseling clients on patentability and freedom-to-operate issues. He is well versed in the fields of food science, chemistry, adhesives, polymers, laminates, films, petroleum, and lubricants.

Jeff counsels clients in chemical and mechanical patent applications. He represents clients in appeals before the United States Patent and Trademark Office Patent Trial and Appeal Board.


Practice Areas


Representative Matters

  • Advised an international container seal company in patent and enforcement matters, including obtaining several patents in key product technologies to expand their patent portfolio
  • Managed a global patent portfolio relating to novel adhesive formulations and films suitable for packaging applications
  • Represented a global irrigation company through a complex patent clearance
  • Prosecuted a patent relating to beverage concentrates for a Fortune 500 food company
  • Advised a polymer company on freedom to operate involving import and export provisions of the U.S. Patent Code

Prior Experience

  • Fitch, Even, Tabin & Flannery LLP, Partner, 2003-2016
  • 3M Company, Engineer, 1992-2000




Court Admissions


Professional & Community Involvement

William Mitchell College of Law, Intellectual Property Institute

  • Board of Advisors

Intellectual Property Law Association of Chicago

  • U.S. Patents Committee
    • Chair, 2014-2016

News & Insights


  • Jeffrey A. Chelstrom is featured in the Chicago Tribune article “Honigman Continues To Strengthen Its Intellectual Property Practice”
    Media |

Press Releases


  • Prosecuting the Unexpected Ratio: Advanced Lessons in Patent Prosecution and Claim Drafting
    Event | Webinar | | Presenter
  • America Invents Act First-to-File Changes: What Happens Now?
    Event | Webinar | | Presenter
  • The Effects of the New Patent Rules on Prior Art
    Event | Chicago, IL | | | Speaker
  • The Leahy-Smith America Invents Act: A Further Look into "First-to-File"
    Event | Webinar | | Presenter


  • Publication | Intellectual Property Magazine |
  • Property: Prescriptive Easements and a Change from Permissive to Hostile Use - Boldt v. Roth
    Publication | William Mitchell Law Review, Vol. 28, No. 3 |
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