MO Rev Stat § 416.652 (2021)
2021 Missouri Revised Statutes|Title XXVI - Trade and Commerce|Chapter 416 - Monopolies, Discriminations and Conspiracies|Section 416.652 - Demand letters, no bad faith assertions of patent infringement — factors court may consider.

Effective - 28 Aug 2014   416.652. Demand letters, no bad faith assertions of patent infringement — factors court may consider. — 1. No person shall make a bad faith assertion of patent infringement in a demand letter.  2. A court may consider the following factors as evidence that a person has made a bad faith assertion of patent infringement in a demand letter:  (1) The demand letter does not contain the following information:  (a) The patent number;  (b) The name and address of the patent owner or owners and assignee or assignees, if any; and  (c) Factual allegations concerning the specific areas in which the target's products, services, or technology infringe the patent or are covered by the claims in the patent;  (2) The demand letter lacks the information described in subdivision (1) of this subsection, the target requests the information, and the person fails to provide the information within a reasonable period of time;  (3) The demand letter demands payment of a license fee or response within an unreasonably short period of time;  (4) The person offers to license the patent for an amount that is not based on a reasonable estimate of the value of the license;  (5) The person, company, or any of its subsidiaries or affiliates has previously presented a demand letter claiming or asserting patent infringement of the same patent under substantially the same circumstances, and a court has entered a final judgment that the demand letter presented a bad faith assertion of patent infringement;  (6) The person attempted to enforce the claim of patent infringement in litigation, and a court found the claim to be brought in bad faith; and  (7) Any other factor the court finds relevant.  3. A court may consider the following factors as evidence that a person has not made a bad faith assertion of patent infringement:  (1) The demand letter contains the information described in subdivision (1) of subsection 2 of this section;  (2) If the demand letter lacks the information described in subdivision (1) of subsection 2 of this section and the target requests the information, the person provides the information within a reasonable period of time;  (3) The person engages in a good faith effort to establish that the target has infringed the patent and to negotiate an appropriate remedy;  (4) The person makes a substantial investment in the use of the patent or in the production or sale of a product or item covered by the patent;  (5) The person is:  (a) The inventor or joint inventor holding the patent or in the case of a patent filed by and awarded to an assignee of the original inventor or joint inventor, is the original assignee; or  (b) An institution of higher education or a technology transfer organization owned or affiliated with an institution of higher education;  (6) The person has:  (a) Demonstrated good faith business practices in previous efforts to enforce the patent, or a substantially similar patent; or  (b) Successfully enforced the patent or a substantially similar patent through litigation; and  (7) Any other factor the court finds relevant. ­­-------- (L. 2014 S.B. 706)