About Us Allen, Dyer, Doppelt & Gilchrist, P.A. practices in the areas of Domestic and International patent prosecution in electronic, electrical, telecommunication, medical appliances and other disciplines, Domestic and International trademark registration, copyrights. The trial attorneys represents clients before state and federal courts and administrative agencies in intellectual property infringement, antitrust, unfair competition, trade regulation, trade secrets and a variety of complex commercial litigation associated with technology and intellectual property.