Amster Rothstein and Ebenstein, LLP - Intellectual Property Law

Keith J. Barkaus Partner


Direct 212 336 8043
Main 212 336 8000
Fax 212 336 8001

405 Lexington Avenue
48th Floor
New York, NY 10174
Keith focuses his practice on client counseling and the preparation and prosecution of U.S. and foreign patent applications in technology innovations, including electrical devices, mechanical devices, computer hardware and computer software. In addition, Keith has prepared patentability, validity, right to use and infringement opinions and also conducted due diligence investigations.

Keith also has significant litigation experience including preparing infringement and invalidity contentions, working with experts to prepare expert reports, taking and defending depositions and preparing and opposing a variety of motions. 

As part of a team that successfully defended a client in a patent litigation involving four patents related to remote controls, Keith and his colleagues were able to eliminate three of the four asserted patents prior to trial and secured a jury verdict of non-infringement and invalidity with respect to the fourth after trial. 

Keith has worked on more than a dozen Inter Partes Review proceedings before the Patent Trial and Appeal Board in which he has represented both patent owners and requesters. 

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In The Press

  • Registered to Practice Before the U.S. Patent and Trademark Office
Bar Admissions
  • New York Bar, 2001
  • U.S. Patent and Trademark Office
  • Union College, B.S.E.E., 1997
  • Hofstra University School of Law, J.D., 2000
Professional Associations & Memberships
  • Member, Association of the Bar of the City of New York
  • Member, American Intellectual Property Law Association
  • Member, Institute of Electrical and Electronics Engineers
Awards & Honors
  • New York "Super Lawyers" for IP, Rising Stars 2013
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