Patent examiner United States Patent Office, Washington, 1959-1960. Patent agent Stevens, Davis, Miller & Mosher, 1960-1963. Attorney Abbott Laboratories, North Chicago, Illinois, 1963-1966, Scott Paper Company, Philadelphia, 1966-1968.
Partner, head computer and technical law group Schnader, Harrison, Segal & Lewis, 1968-1989. Vice president, general patent and technical counsel Unisys Corporation, Blue Bell, 1989-1990. Founder Bramson and Pressman, Conshohocken, 1991, 95—.
President, Chief Executive Officer InterDigital Technology Corporation, King of Prussia, 1992-1995. President VAI Patent Management Corporation, Conshohocken, 1995—2004. Adjunct professor Temple University Law School, Philadelphia.