Paralegals prepare legal documents and conduct research to assist lawyers or other professionals. Independent paralegals provide legal services to the public as allowed by government legislation, or provide paralegal services on contract to law firms or other establishments. Notaries public administer oaths, take affidavits, sign legal documents and perform other activities according to the scope of their practice. Trademark agents advise clients on intellectual property matters. Paralegals are employed by law firms, by record search companies and in legal departments throughout the public and private sectors. Independent paralegals are usually self-employed. Notaries public are employed by government and in the public and private sectors or they may be self-employed. Trademark agents are employed by law firms and legal departments throughout the public and private sectors, trademark development and search firms or they may be self-employed.