Mike Longmeyer brings a broad technical and legal background to the firm’s Intellectual Property group. He stands out for his in-depth understanding of his clients’ innovations in relation to the broader technological landscape, as informed by his 10 years of experience as a NASA engineer, and for his skill in building layers of intellectual property protection around those innovations.

Mike has extensive experience with the issues surrounding patent eligibility of computer-implemented inventions after the Supreme Court’s Alice decision, and has obtained patent protection for numerous computer-implemented inventions in the fields of electronic transactions, information processing and automatic control systems. He has also obtained patent protection for innovations in a wide range of mechanical arts, with particular experience in the fields of turbomachinery, aircraft and spacecraft systems and medical devices.

In addition to the preparation and prosecution of U.S. and international patent applications, Mike draws on his six years of experience with a federal Court of Appeals to draft persuasive briefs to the court in complex patent litigation cases. He also has experience in the litigation of a wide range of commercial and contract disputes.

Mike provides a full range of intellectual property services to his clients, including noninfringement and invalidity opinions, and patentability, due diligence and patent landscape analyses.


  • Ave Maria School of Law  (J.D., magna cum laude, 2004)
  • Purdue University  (M.S., 1989)
    • Aeronautical & Astronautical Engineering
    • 1991, B.S.


  • Missouri, 2006
  • Illinois, 2004
  • U.S. Patent and Trademark Office, 2003
  • U.S. District Court, Eastern District of Missouri
  • U.S. District Court, Western District of Missouri
  • U.S. District Court, Northern District of Illinois
  • U.S. Court of Appeals, Eighth Circuit

Professional Activities

  • The Missouri Bar
  • Illinois State Bar Association


  • AV® Peer Review Rated, Martindale-Hubbell


In his previous career as an engineer for NASA at the Marshall Space Flight Center in Huntsville, Alabama, Mike developed hardware and software for real-time data acquisition and control systems, and provided other structural testing and microgravity experiment support.

Mike also clerked for six years for Judge Raymond W. Gruender of the U.S. Court of Appeals for the Eighth Circuit.