Montana Title 42. Adoption § 42-5-103. Notice of hearing

(a) a person whose consent to adoption is required under 42-2-301;

(b) the department or agency whose consent to adoption is required;

(c) the spouse of the petitioner if the spouse has not joined in the petition;

(d) a person who has revoked a consent or relinquishment or is attempting to have a consent or relinquishment set aside;

(e) the child's guardian ad litem if the child has one; and

(f) any other person named by the court to receive notice.

(a) whose parental rights have been terminated in prior proceedings;

(b) who waives notice in a relinquishment, consent, or other document signed by the party;

(c) who has consented in writing to an adoption; or

(d) whose consent to adoption is not required under 42-2-302.