James D. Berquist

James D. Berquist is a partner at Rimon in Northern Virginia whose practice centers on intellectual property litigation, with particular emphasis on patent infringement cases. He has served as lead counsel in more than seventy-five patent infringement litigations across numerous federal districts. His work involves technologies ranging from computer systems and chemical formulations to sensors, industrial equipment, wireless networks, furniture design, and GPS-related technologies.

Berquist earned a J.D. from the University of Missouri-Columbia School of Law and a B.S. in Mechanical Engineering from the University of Missouri. His engineering background supports litigation involving technically complex inventions and patent claims. That combination of legal and technical training helps him evaluate disputed technologies, work with technical evidence, develop infringement and validity positions, and present complicated patent issues in federal trial and appellate courts.

Berquist has litigated patent cases in more than thirty federal districts, including major patent venues in Texas, Delaware, and California. He has also represented clients in Federal Circuit appeals and in matters before the U.S. Patent and Trademark Office. His prior experience includes partner roles at Davidson Berquist Jackson & Gowdey, Nixon & Vanderhye, and Cushman Darby/Pillsbury Madison, reflecting a long career in intellectual property litigation.

James D. Berquist is admitted in Virginia and Missouri, before the U.S. Supreme Court and Federal Circuit, and before the U.S. Patent and Trademark Office. His practice combines courtroom experience with mechanical engineering knowledge, helping clients manage patent disputes involving diverse technologies. He brings a litigation-focused approach to infringement claims, appellate issues, and intellectual property conflicts where technical detail and strategic case management are central.

Law Office Affiliations

• Partner, Rimon, P.C.
• Member, Virginia State Bar
• Member, The Missouri Bar

Licensed State

• Virginia
• Missouri

Education

• University of Missouri-Columbia School of Law
  Juris Doctor (JD)
• University of Missouri
  Bachelor of Science (BS) in Mechanical Engineering

Awards & Badges