Cal. Business and Professions Code § 14220

(a) Any mark and its registration hereunder shall be assignable with the good will of the business in which the mark is used, or with that part of the good will of the business connected with the use of and symbolized by the mark. Assignment shall be by instrument in writing duly executed and may be recorded with the secretary upon the payment of the recording fee payable to the secretary as set forth in subdivision (b) of Section 12193 of the Government Code, 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 renewal thereof. An assignment of any registration under this chapter shall be void as against any subsequent purchaser for valuable consideration without notice, unless it is recorded with the secretary within three months after the date thereof or prior to the subsequent purchase. (b) Any registrant or applicant effecting a change of the name of the person to whom the mark was issued or for whom an application was filed may, on a form prescribed by the secretary, record a certificate of change of name of the registrant or applicant with the secretary upon the payment of the recording fee. The secretary may issue in the name of the assignee a certificate of registration of an assigned application or a new certificate or registration for the remainder of the term of the registration or last renewal thereof. (c) Other instruments that relate to a mark registered or application pending pursuant to this chapter, including, but not limited to, licenses, may be recorded at the discretion of the secretary, provided that the instrument is in writing and is duly executed. (d) Acknowledgment shall be prima facie evidence of the execution of an assignment or other instrument and, when recorded by the secretary, the record shall be prima facie evidence of the execution of an assignment. (e) A photocopy of any instrument referred to in subdivision (a), (b), or (c) shall be accepted for recording if it is certified by any of the parties thereto, or their successors, to be a true and correct copy of the original. (f) Neither this chapter nor the recordal of any instrument received by the secretary pursuant to this chapter shall have any effect, including, but not limited to, any effect relating to attachment, perfection, priority, or enforcement, on any security interest governed by Division 9 (commencing with Section 9101) of the Uniform Commercial Code.