Oregon Revised Statutes Property Rights and Transactions § 93.925

Notwithstanding a seller's waiver of prior defaults, if notice is given and purchaser does not cure the default within the period specified in ORS 93.915, the contract forfeiture remedy may be exercised and the contract shall not be reinstated by any subsequent offer or tender of performance. The notice required in ORS 93.915 shall be in lieu of any notice that may be required under the terms of the contract itself, except where greater notice or notice to persons other than those described in ORS 93.915 is required by the terms of the contract, in which case notice shall be given for such longer period of time and to such additional persons as required by the contract.