Okla. Stat. tit. 78 § 26
Any trademark and its registration shall be assignable with the good will of the business in which the trademark is used, or with that part of the good will of the business connected with the use of and symbolized by the trademark. Assignment shall be by instruments in writing duly executed and may be recorded with the Secretary of State upon the payment of a fee of Twenty-five Dollars ($25.00), payable to 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 renewal thereof. An assignment of any registration pursuant to the provisions of this title shall be void as against any subsequent purchaser for valuable consideration without notice unless it is recorded with the Secretary of State within three (3) months after the date of the assignment or prior to such subsequent purchase.
Okla. Stat. tit. 78, § 26