A defendant who obtained dismissal of the claims against her on the ground that the diversity amount was not met. The plaintiff sued the Defendant for failing to return his dog to him. (The dog eventually ended up in a shelter in Canada).
Because the defendant did not serve her Rule 11 Sanctions motion and give the plaintiff 21 days to drop her from the case, the sanctions motion was denied.
via Barringer v. Whitworth, Dist. Court, ED Michigan 2018 – Google Scholar
fedcivilprocedure 