Wisconsin has a "no contest clause" statute: 854.19Penalty clause for contest. A provision in a governing instrument that prescribes a penalty against an interested person for contesting the governing instrument or instituting other proceedings relating to the governing instrument may not be enforced if the court determines that the interested person had probable cause for instituting the proceedings.

Q: In this statute, does "interested person" mean they would be getting something under the will, or can it also be for if the person isn't getting something under the will but would have under laws of intestacy. Please explain.