Except as otherwise provided by law as to negotiable instruments, every assigned claim shall be subject to be reduced to the extent of all counterclaims which the obligor had against the plaintiff's assignor at the time of notice of the assignment.
Mo. Rev. Stat. § 509.480
Reduction of assigned claims to the extent of all counterclaims
Effective: 28 Aug 1943; (L. 1943 p. 353 § 80)
Official source: Missouri Revisor of Statutes. Reproduced from public-domain Missouri statutes; confirm against the official source for the current text. Not legal advice.