The New Jersey Registration of Alternate Name is a legal process in which an individual, a business, or an organization can register an alternative name in the state of New Jersey. This registration is done through the New Jersey Department of the Treasury and is used to identify a business or organization, or an individual when conducting business or other activities in the state. The two types of New Jersey Registration of Alternate Name are the Certificate of Assumed Name and the Certificate of Doing Business Under An Assumed Name. The Certificate of Assumed Name is used to register a new business or organization, or an individual's name, and is valid for five years. The Certificate of Doing Business Under An Assumed Name is used to register an existing business or organization, and is valid for an indefinite length of time. Both types of registration provide legal protection and proof of identity when conducting business in the state of New Jersey.