Or. Rev. Stat. § 79A.1100
A security interest arising under ORS 72.4010, 72.5050, 72.7110 (3) or 72A.5080 (5) is subject to this chapter. However, until the debtor obtains possession of the goods:
(4) The security interest has priority over a conflicting security interest created by the debtor. [Formerly 79.0110]
EFFECTIVENESS OF SECURITY AGREEMENT; ATTACHMENT OF SECURITY INTEREST; RIGHTS OF PARTIES TO SECURITY AGREEMENT