IC 24-11-2-2: "Demand letter"

Sec. 2. (a) "Demand letter" means a letter, electronic mail, or any other written, including electronic, communication asserting that a target has engaged in patent infringement.

(b) The term does not include a complaint alleging patent infringement, or other documents related to an action for patent infringement, filed:

(1) in a United States District Court; or

(2) with the International Trade Commission.