Minn. Stat. § 518.05: ANNULMENT; WHEN TO BRING.

An annulment may be sought by any of the following persons and must be commenced within the times specified, but in no event may an annulment be sought after the death of either party to the marriage:

(a) for a reason set forth in section 518.02, clause (a), by either party or by the legal representative of the party who lacked capacity to consent, no later than 90 days after the petitioner obtained knowledge of the described condition;

(b) for the reason set forth in section 518.02, clause (b), by either party no later than one year after the petitioner obtained knowledge of the described condition;

(c) for the reason set forth in section 518.02, clause (c), by the underaged party, the party's parent or guardian, before the time the underaged party reaches the age at which the party could have married without satisfying the omitted requirement.