Katherine Cappaert is an attorney in the firm’s Patent Litigation and Post Grant Proceedings practice groups. Her primary focus is on litigating patents spanning a multitude of technologies, including the mechanical, electrical, and chemical arts, in federal courts, along with pursuing and defending against patent validity challenges before the Patent and Trademark Appeals Board in inter partes review and covered business method proceedings. Ms. Cappaert also has experience with copyright related litigation matters and opinions.

Prior to attending law school Ms. Cappaert worked as a mechanical design engineer for Xerox Corporation in Portland, OR in the Xerox Office Group. During her time at Xerox, Ms. Cappaert was responsible for the design and testing of the drum and transfix unit for an A4 solid ink printer.

During law school Ms. Cappaert worked as a law clerk at a Florida-based IP boutique, focusing on patent litigation and inter partes review matters. Ms. Cappaert is a named inventor on a U.S. patent directed to creating the proper drum surface topography for solid ink jet printers.


  • American University, Washington College of Law (J.D., cum laude)
  • Massachusetts Institute of Technology (B.S.)
    • Mechanical Engineering


  • Registered to practice before the U.S. Patent and Trademark Office
  • Virginia