On motion and just terms, the court may relieve a party or its legal representative from a final judgment, order, or proceeding for the following reasons:
mistake, inadvertence, surprise, or excusable neglect;
newly discovered evidence that, with reasonable diligence, could not have been discovered in time to move for a new trial under Rule 59(b);
fraud (whether previously called intrinsic or extrinsic), misrepresentation, or misconduct by an opposing party;
the judgment is void;
the judgment has been satisfied, released, or discharged; it is based on an earlier judgment that has been reversed or vacated; or applying it prospectively is no longer equitable; or
any other reason that justifies relief.
A Rule 60(b) motion must be filed in a reasonable time. This is capped at one year for for Rule 60(b)(1–3), but not (4–6).