Lenny is experienced with patent prosecution and intellectual property litigation. As an intellectual property lawyer, he provides counseling and opinions to clients regarding matters in the technology, software, transportation and manufacturing industries. His litigation experience is before trial and appellate courts.

Before entering the legal field, Lenny worked as an electrical engineer on the Lunar Module and the F-14 fighter aircraft at Grumman Aerospace Corp., and spent more than four years working on primary plant instrumentation for the 688-class submarine while on Admiral Hyman G. Rickover’s staff as a member of the U.S. Navy’s nuclear propulsion program.

At Hahn Loeser

Lenny’s experience includes obtaining patents regarding technology and software, including the transmission of multimedia content, drafting legal opinions regarding intellectual property matters, and participating in intellectual property litigation, including drafting briefs.

  • Obtained patents on energy conservation technology on behalf of a Fortune 100 commercial manufacturing company
  • Obtained patents on multimedia content delivery for a Fortune 100 software company
  • Obtained patents on cell phone antenna technology on behalf of a multinational telecom company
  • Obtained patents on automatic contact center technology for a technology company



George Washington University Law School, LL.M. (intellectual property), 1997 University of Chicago Law School, J.D., 1979 University of Rochester, B.S. (electrical engineering), 1971

Bar Admissions

Admitted to the Illinois Bar, 1979


Licensed to practice before the U.S. Court of Appeals for the Armed Forces, 1980; U.S. Supreme Court, 1987; U.S. Patent and Trademark Office, 1993; U.S. Court of Appeals for the Federal Circuit, 1993; U.S. District Court for the Northern District of Illinois, 1994; U.S. Court of Appeals for the Seventh Circuit. 1994; U.S. District Court for the Eastern District of Wisconsin, 1995; and the U.S. Claims Court, 1995


Registered professional engineer in Virginia