Wyo. Stat. § 1-26-604: Demand for retrial.

(a) Either party, within thirty (30) days after entry of the judgment, may reject the judgment and file a written demand for trial. The action shall be restored to the docket of the court as though proceedings under this article had not occurred.

(b) If the condemnor files a demand under subsection (a) of this section and ultimately obtains a judgment no more favorable to him, the court may require him to pay, in addition to costs, the condemnee's litigation expenses incurred after the demand was filed.