Under Michigan's Rules of Civil Procedure 2.612 (c) which also applies to family law cases, a Motion to vacate or reopen a Judgment must be brought no later than one year after the Judgment was entered. There is no stated cause of action for coercion or duress, but arguably those issues could be addressed in sub -paragraphs (c) or (f) in the rule included below.
Michigan Rules of Civil Procedure 2.612 (c)
Grounds for Relief From Judgment.
(1) On motion and on just terms, the court may relieve a party or the legal
representative of a party from a final judgment, order, or proceeding on the
(a) Mistake, inadvertence, surprise, or excusable neglect.
(b) Newly discovered evidence which by due diligence could not have been
discovered in time to move for a new trial under MCR 2.611(B).
(c) Fraud (intrinsic or extrinsic), misrepresentation, or other misconduct of
an adverse party.
(d) The judgment is void.
(e) The judgment has been satisfied, released, or discharged; a prior
judgment on which it is based has been reversed or otherwise vacated; or it
is no longer equitable that the judgment should have prospective
(f) Any other reason justifying relief from the operation of the judgment.
(2) The motion must be made within a reasonable time, and, for the grounds
stated in subrules (C)(1)(a), (b), and (c), within one year after the judgment,
order, or proceeding was entered or taken. A motion under this subrule does
not affect the finality of a judgment or suspend its operation.
You must serve a Motion with an attached affidavit outlining the basis for the relief sought. In your case, you would identify the Rule of Civil Procedure above and then address in detail your basis for believing that coercion of duress apply. If you had psychological issues at or around that time that were being treated, such as depression, etc.., it would be wise to include those records and/or a letter from the treating psychologist indicating that you were susceptible to suggestion or pressure at the time and/or that you were incapable of making an informed decision.
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