Sheldon is a retired shareholder and counsel to Banner Witcoff. He practiced in the firm's Chicago office for more than 40 years.
While at the firm, Sheldon represented numerous clients as lead trial counsel in cases involving a wide variety of subject matter, including electronic instruments and control systems, automotive tire tread design, dialysis machines, microphones, phonograph cartridges, non-skid braking systems, hearing aids, valves, and self-focusing slide projectors. Sheldon has also worked extensively in international litigation and prosecution matters, and has testified as an expert on U.S. patent law in U.S. and foreign courts. He also has lectured at Northwestern University, Chicago Kent College, and before numerous patent bar groups.
Sheldon earned his B.S. degree in Electrical Engineering from the University of Maryland and his Juris Doctorate from George Washington University. He is a member of Phi Delta Phi and the Order of the Coif, the American Bar Association, the Intellectual Property Law Association of America, and the Intellectual Property Law Association of Chicago. He served in the United States Navy from 1943 to 1946.