Oakley, O'Sullivan & Eaton is a general practice law firm, specializing in business or corporate law, estate planning and real estate law. Attorneys Gregory N. Eaton, John C. Oakley and Robert J. O'Sullivan offer representation to individuals and business in and around Andover. Eaton has been praciting law in Massachusetts since 1985; Oakley has been practicing since 1978; O'Sullivan has been practicing since 1972.