Any mark and its registration under the provisions of this article shall be assignable with the goodwill of the business in which the mark is used or with that part of the goodwill of the business connected with the use of and symbolized by the mark. Assignment shall be by instruments in writing duly executed and may be recorded with the secretary of state who upon recording of the assignment shall issue in the name of the assignee a new certificate for the remainder of the term of the registration or of the last reregistration thereof. An assignment of any registration under this article shall be void as against any subsequent purchaser for valuable consideration without notice, unless it is recorded with the secretary of state within three months after the date thereof or prior to such subsequent purchase.