The Maine Amended Application for Authority to do Business is a form used by businesses that are authorized to conduct business in the State of Maine. Businesses must submit this form to make changes to their existing business registration or to update their information with the Maine Secretary of State. There are two types of Maine Amended Applications for Authority to do Business: the Amended Certificate of Authority and the Amended Application for Authority to do Business. The Amended Certificate of Authority is used to make changes to an existing Certificate of Authority, such as changing the name or address of the business, or adding or deleting a trade name. The Amended Application for Authority to do Business is used to make changes to an existing Application for Authority to do Business, such as updating the contact information of the business or changing the type of business entity. Both forms must be signed and notarized before being filed with the Maine Secretary of State.