Delaware Code Title 12. Decedents' Estates and Fiduciary Relations § 1312. Limitation on action contesting validity of exercise of power of appointment

(1) One hundred twenty days after the date that the exercisor notified in writing the person who is contesting the exercise of the existence of the instrument exercising the power of appointment, the name and address of the exercisor, whether such person is a beneficiary, and of the time allowed under this section for initiating a judicial proceeding to contest the exercise of the power of appointment.  The exercisor shall also provide to the person who is contesting the exercise a copy of the instrument which creates the power of appointment.  For purposes of this subsection, notice shall have been given when received by the person to whom the notice was given and, absent evidence to the contrary, it shall be presumed that notice mailed or delivered to the last known address of such person constitutes receipt by such person.  This paragraph (a)(1) shall be applicable only to a proceeding to contest whether an exercise of a power of appointment by any written instrument other than a will is valid to the extent that the basis for such contest is a failure to comply with formalities for the execution of the power of appointment, undue influence over the exercisor, or lack of capacity of the exercisor;

(2) Two years after the death of the exercisor;  or

(3) The date the person’s right to contest was precluded by adjudication, consent, or other limitation.