John W. McIlvaine » Member Directory Go back to directory. John W. McIlvaine The Webb Law FirmPatent, Trademark, Copyright, Litigation Work One Gateway Center 420 Fort Duquesne Boulevard Suite 1200 Pittsburgh PA 15222 work Work Phone: 412-471-8815work Work Email: jwmcilvaine@webblaw.comINTERNET Categories: Attorney Updated 5 years ago.