Charles K. Friedman

Registered Patent Attorney

Intellectual Property and Emerging Technologies Practice Group

Professional Experience

A Patent Attorney for over eighteen years and with the practice for over twenty years, Charles Friedman has advised clients on issues of patentability, infringement, freedom to operate, and validity, and has prepared numerous opinion letters in these areas.

Mr. Freidman has handled various phases of patent prosecution, with particular emphasis on patent appeals. He has written numerous briefs to the Board of Patent Appeals and Interferences/ Patent Trial and Appeal Board, including a brief challenging a Patent Examiner’s interpretation of “abstract” inventions under Bilski v. Kappos, which resulted in the Examiner’s ruling being reversed. Additionally, he has successfully argued in front of the Board of Patent Appeals and Interferences (now the Patent Trial and Appeal Board) on an inter partes re-exam case and has advised clients on post-grant review procedures before the Patent Trial and Appeal Board.

While with the practice, Mr. Friedman has drafted patent applications, conducted patent and trademark searches, and prosecuted trademark applications.  He has also assisted clients with prior art submissions under Rule 99 (a rule existing prior to the implementation of the America Invents Act—AIA) and has subsequently advised clients regarding pre-issue submission of prior art under the AIA.

Prior to joining the practice, Mr. Friedman was a Patent Examiner at the US Patent and Trademark Office in the arts of coating and papermaking for two and one-half years. He spent the first five years of his career as a contract officer’s technical representative and quality engineer with the US Army Armament, Munitions, and Chemical Command.

Bar Admissions

    • U.S. Patent & Trademark Office (USPTO) – Registered Patent Attorney
    • Maryland


    • American University, J.D.
    • University of New Orleans, M.B.A.
    • Carnegie-Mellon University, B.S., Chemical Engineering and Engineering and Public Policy 

    • American Institute of Chemical Engineers
Teaching Experience

    •  University of Baltimore, Undergraduate Finance Adjunct Professor, 1990