IBM T.J. Watson Research Center , Yorktown Heights, NY Research Staff Scientist 1989-1993.

Massachusetts Institute of Technology, Cambridge, MA (concurrent with IBM) Visiting Scientist, National Magnet Laboratory 1990-1993.

Columbia University, New York, NY (concurrent with IBM) Thesis Supervisor of Doctoral Students 1989-1993.

Technical and/or Legal Expert & Consultant Served as Technical Expert and/or Patent Law Expert in numerous patent litigations; Technical expert in microelectronics, microwave/millimeter wave circuits and devices, optoelectronics, wireless communications, nanotechnology, and software; Appointed by U.S. federal judges as Special Master in patent litigations; Served on the Board of Directors/Advisors of numerous technology start-ups 1998-Present.

Pennie & Edmonds LLP, Washington, DC Associate Attorney (1996-97), Patent Agent & Law Clerk (1993-96);1993-1997.

Law Clerk to the Hon. Patrick E. Higginbotham, Dallas, TX U.S. Circuit Judge, U.S. Court of Appeals for the Fifth Circuit 1997-1998.

United States Patent & Trademark Office (USPTO), Alexandria, VA Thomas A. Edison Scholar Oct. 2012-Feb. 2013 Expert/Adviser July 2013-June 2014.

DiMuro Ginsberg PC, Alexandria, VA Of Counsel Aug. 2014-Present.