Mo. Rev. Stat. § 416.650
416.650 Definitions
416.650. Definitions — For purposes of sections 416.650 to 416.658 , the following terms shall mean:
(1) "Demand letter" , a letter, email, or other communication asserting or claiming that a target has engaged in patent infringement, but shall not include a petition filed in a court of appropriate jurisdiction;
(2) "Target" , an end user who purchases, rents, leases, or otherwise obtains a product or service in the commercial market that is not for resale and that is, or later becomes, the subject of a patent infringement allegation.
(L. 2014 S.B. 706)