John J. Feldhaus


John J. Feldhaus


John J. Feldhaus is a retired partner and intellectual property lawyer with Foley & Lardner LLP. He concentrated his practice in patent litigation involving electronic and computer technologies and was lead counsel in numerous cases on subject matter, including confocal microscopy, computer power management, plasma enhanced continuous vapor deposition, dynamic random access memories and liquid crystal display technology. He was a member of the firm’s Intellectual Property Litigation Practice.

John began his career as a patent examiner for the U.S. Patent and Trademark Office in 1974.



1974年に米国特許商標庁で特許審査官に就任した。『エレクトロニクスおよびコンピュータ特許の実務 (Electronics and Computer Patent Practice)』および『エレクトロニクスおよびコンピュータ特許と著作権の実務 (Electronics and Computer Patent and Copyright Practice)』という教科書を共著者として執筆した(両書ともPatent Resources Instituteより出版)。また、Patent Resource Group, Inc. に招聘され、数多くの講演を行っている。



Awards and Recognition

In 2010, the Legal 500 recognized John for patent litigation and in 2013 – 2016, he was selected for inclusion in the Washington, D.C. Super Lawyers® lists for his work in intellectual property litigation. John has been rated AV® Preeminent™, the highest performance rating in Martindale-Hubbell’s peer review rating system.


John is a member of the Virginia Bar Association.

Presentations and Publications

John is co-author of the textbooks, “Electronics and Computer Patent Practice” and “Electronics and Computer Patent and Copyright Practice,” both published by Patent Resources Institute. He has also lectured extensively for the Patent Resources Group.