S.D. Codified Laws § 37-36-5
Upon motion by a target and a finding by the court that the target has established a reasonable likelihood that a person has made a bad faith assertion of patent infringement in violation of this chapter, the court shall require the person to post a bond in an amount equal to a good faith estimate of the target's costs to litigate the claim and amounts reasonably likely to be recovered under this chapter, conditioned upon payment of any amounts finally determined to be due to the target. The court shall hold a hearing to determine the amount of the bond on the request of either party. A bond ordered pursuant to this section may not exceed two hundred fifty thousand dollars. The court may waive the bond requirement if the court finds the person has available assets equal to the amount of the proposed bond or for other good cause shown.
SDCL 37-36-5