Section 5-807 - Burden of proof(a)(1) The State need not negate an exemption, proviso, or exception set forth in this title in: (i) a complaint, information, indictment, or other pleading; or(ii) a trial, hearing, or other proceeding under this title.(2) The burden of proof to establish an exemption, proviso, or exception is on the person claiming its benefit.(b)(1) In the absence of proof that a person is a registrant or holder of an order form issued under § 5-303(d) of this title, the person is presumed not to be a registrant or holder of a form.(2) The person has the burden of proof to rebut the presumption.