John Eisenhart


T:  (703) 738-4785

M: (703) 338-3781

Washington, D.C.


View full bio

Practice Areas:

  • Intellectual Property
  • Internet & eCommerce
  • Technology

Bar Admissions:

  • Virginia
    • admitted only in VA, awaiting admission to DC Bar
  • United State Patent & Trademark Office
  • U.S. District Court for the Eastern District of Virginia
  • U.S. Court of Appeals for the 4th Circuit
  • Supreme Court of Virginia


  • George Mason University School of Law, JD, 1993
  • Virginia Polytechnic Institute and State University, BSME, 1986

Large Law Firm Experience:

  • Nixon & Vanderhye, P.C.

Mr. Eisenhart focuses his practice on U.S. and International patent prosecution. He has extensive experience obtaining patent protection for all manner of computer software, telecommunications and voice over IP, imaging and displays, semiconductor fabrication and packaging techniques, mechanical systems, electronics, optics and biomedical engineering technology. Mr. Eisenhart also has extensive experience drafting and prosecuting design patent applications. In addition to his patent prosecution experience, Mr. Eisenhart has provided numerous clients with patent infringement and non-infringement opinions as part of pre-litigation investigations.

Mr. Eisenhart also maintains an active U.S. and International trademark prosecution practice for a large variety of clients. He has assisted clients in establishing International trademark protection programs for a variety of different consumer products and services.

Mr. Eisenhart has also participated in multiple patent and trademark infringement litigations in various Federal Courts throughout the country. His litigation experience includes pre-litigation investigations, discovery, trial and appeals.

Mr. Eisenhart is registered to practice before the U.S. Patent & Trademark Office, and is a member of the Virginia Bar. He is also admitted to the U.S. District Court for the Eastern District of Virginia, the U.S. Court of Appeals for the 4th Circuit, and the Supreme Court of Virginia.