When a pleader fails to set up a counterclaim through oversight, inadvertence, or excusable neglect, or when justice requires, the pleader may, by leave of court, set up the counterclaim by amendment.
Minn. R. Civ. P. 13.06
When a pleader fails to set up a counterclaim through oversight, inadvertence, or excusable neglect, or when justice requires, the pleader may, by leave of court, set up the counterclaim by amendment.
Minn. R. Civ. P. 13.06