Oregon Revised Statutes Trade Regulations and Practices § 646A.470

(a) If the consumer chooses the refund option described in ORS 646A.466, there shall be no deduction from the full purchase price in calculating the refund under ORS 646A.466;

(b) The rights described in this subsection run against the person who last sold or transferred the assistive device to any other person, whether or not the other person is a consumer, so long as the last person to sell or transfer the device had knowledge of the previous return of the device and did not provide the disclosure required by subsection (1) of this section; and

(c) The rights described under this subsection must be declared and exercised by a consumer within two years after the consumer knows of the previous return and can identify the person against whom the rights run.