Okla. Stat. tit. 12A, § 1-9-321
(c) A lessee in ordinary course of business takes its leasehold interest free of a security interest in the goods created by the lessor, even if the security interest is perfected and the lessee knows of its existence.
Historical Data Laws 2000, SB 1519, c. 371, § 48, eff. July 1, 2001. Oklahoma Code Comment These sections were moved from former sections 2A-103(1)(o) and 2A-307(3).