(a) How action may be commenced.--A person having standing to do so may contest the validity of a revocable trust by filing a petition with the court.

(b) Time limit.--The petition described in subsection (a) must be filed no later than one year after the date on which the trustee gave the notice required by section 7780.3(c) (relating to duty to inform and report). The court, upon petition of a party in interest and with such notice as the court may direct, may limit the time by which a petition under this section must be filed to six months after the date on which the trustee gave the notice required by section 7780.3(c).

(c) Grounds for contest.--The grounds for contesting the validity of a revocable trust shall be the same as those for contesting the validity of a will.

(d) Competency of witnesses.--The competency of a witness in an action contesting the validity of a revocable trust shall be governed by the same rules that apply in actions contesting the validity of a will.