Hahn & Hahn is one of the oldest general practice law firms in California and maintains a staff of more than 25 lawyers. It represents clients before state and federal courts in matters concerning contracts, torts, employment law, professional malpractice, trademark, divorce, tax planning and general business disputes. The firm provides estate planning services, including preparation of wills and trusts, formation and administration of conservatorships and guardianships, and preparation of gift and estate tax returns. Its clients include Becton Dickinson and Company, Citizens Business Bank, Pasadena Tournament of Roses Association, Ralph M. Parsons Company, Roger Penske Cadillac and Caltech. Hahn & Hahn has been operational for more than 100 years and is located in Pasadena, Calif.