(4) The termination shall be effected by serving an advance notice in writing upon the grantee or the grantee's successor in title. In the case of a grant executed by a person or persons other than the author, the notice shall be signed by all of those entitled to terminate the grant under clause (1) of this subsection, or by their duly authorized agents. In the case of a grant executed by one or more of the authors of the work, the notice as to any one author's share shall be signed by that author or his or her duly authorized agent or, if that author is dead, by the number and proportion of the owners of his or her termination interest required under clauses (1) and (2) of this subsection, or by their duly authorized agents. (A) The notice shall state the effective date of the termination, which shall fall within the five-year period specified by clause (3) of this subsection, and the notice shall be served not less than two or more than ten years before that date. A copy of the notice shall be recorded in the Copyright Office before the effective date of termination, as a condition to its taking effect. (B) The notice shall comply, in form, content, and manner of service, with requirements that the Register of Copyrights shall prescribe by regulation. (5) Termination of the grant may be effected notwithstanding any agreement to the contrary, including an agreement to make a will or to make any future grant. (6) In the case of a grant executed by a person or persons other than the author, all rights under this title that were covered by the terminated grant revert, upon the effective date of termination, to all of those entitled to terminate the grant under clause (1) of this subsection. In the case of a grant executed by one or more of the authors of the work, all of a particular author's rights under this title that were covered by the terminated grant revert, upon the effective date of termination, to that author or, if that author is dead, to the persons owning his or her termination interest under clause (2) of this subsection, including those owners who did not join in signing the notice of termination under clause (4) of this subsection. In all cases the reversion of rights is subject to the following limitations: (A) A derivative work prepared under authority of the grant before its termination may continue to be utilized under the terms of the grant after its termination, but this privilege does not extend to the preparation after the termination of other derivative works based upon the copyrighted work covered by the terminated grant. (B) The future rights that will revert upon termination of the grant become vested on the date the notice of termination has been served as provided by clause (4) of this subsection.