Justin D. DeAngelis, Associate


Justin DeAngelis is a patent attorney in the firm's Intellectual Property practice group. As a mechanical engineer and an attorney, his practice focuses primarily on patent preparation and prosecution, freedom to operate analyses, and infringement analyses for design and utility patents, domestically and abroad. Justin has extensive experience preparing, filing, and prosecuting patent applications related to navigation and routing, trading systems, lighting and waveguides, industrial machinery, hand tools, consumer products, aquaculture systems, trucking equipment, and graphical user interfaces. Having familiarity with nearly every aspect of obtaining and asserting patent rights, from determining the proper filing strategy by working with inventors to identifying instances of infringement by analyzing competitor products, Justin regularly counsels clients on their filing and assertion options in the United States and around the world.

While attending law school, Justin was a member of the Intellectual Property Law Society and a participant in the Giles Rich IP Moot Court Competition, and received a Certificate in Intellectual Property. He was also the submissions editor for the Journal of Intellectual Property, a judicial extern for a U.S. District Court Judge in the Northern District of Illinois, and a legislative intern for a U.S. Congressman.

Legal Services

Education and Honors

  • Chicago Kent College of Law at the Illinois Institute of Technology (J.D., 2015)
    • Chicago Intellectual Property Colloquium (Fellow)
    • Journal of Intellectual Property (Submissions Editor)
    • Giles Rich IP Moot Court Competition (Member)
    • Intellectual Property Law Society (Member)
  • University of Wisconsin - Madison (B.S., 2011)
    • Major: Mechanical Engineering
    • American Society of Mechanical Engineers (Member)

Bar Admissions

  • Illinois

Court Admissions

  • U.S. Patent and Trademark Office

Professional and Civic Activities

  • Chicago Bar Association (Chair - Intellectual Property Law Committee)
  • Intellectual Property Law Association of Chicago (Member)
  • Kettle Moraine Land Trust (Member - Board of Directors)
  • LaunchU (Volunteer)