Mo. Rev. Stat. § 509.450 – Counterclaim set up by amendment, when | Midpage
§ 509.450
Mo. Rev. Stat. § 509.450
Counterclaim set up by amendment, when
Effective Aug 28, 1943(L. 1943 p. 353 § 76)
When a pleader fails to set up a counterclaim through oversight, inadvertence, or excusable neglect, or when justice requires he may by leave of court set up the counterclaim by amendment.