Or. Rev. Stat. § 79A.3300
(1) A purchaser of chattel paper has priority over a security interest in the chattel paper which is claimed merely as proceeds of inventory subject to a security interest if:
(3) Except as otherwise provided in ORS 79A.3270, a purchaser having priority in chattel paper under subsection (1) or (2) of this section also has priority in proceeds of the chattel paper to the extent that:
[Formerly 79.0330]