15 GCA § 1617: Liability for Costs of Trial.

If, following the filing of the petition provided in Section 1611 of this Title, the probate is not revoked, all costs of trial, including the prevailing party's costs and reasonable attorney's fees incurred for the contest, shall be paid by the contestant. If the probate is revoked, the costs of trial shall be paid by the party who resisted the revocation or out of the property of the decedent, as the Superior Court of Guam directs; provided, that if the probate is revoked, the contestant shall nonetheless bear his own attorney's fees.