Whether the parol-evidence rule permits proof that a written agreement was only a partial integration and omitted an additional oral term.
Holding
Yes. Oregon’s parol-evidence rule applies only to terms the parties intended the writing to embody, and a consistent additional oral term may be proved when the writing was not intended as the complete and final agreement.
Reasoning
The Court treated ORS 41.740 as a codification of the common-law parol-evidence rule rather than as an absolute ban on all evidence outside a writing. Thus, the rule does not apply merely because a writing exists. It applies only when the parties intended the writing as a final and complete integration of their agreement.
The Court reaffirmed the limits associated with the partial-integration doctrine. Without separate consideration, an alleged oral agreement may be admitted only if it is not inconsistent with the writing and is the kind of agreement parties in the same situation might naturally make separately. These limits preserve a meaningful role for the parol-evidence rule while allowing proof that an informal writing did not capture the entire bargain.
The Court rejected the view that a jury may hear any relevant oral evidence simply because one party alleges an incomplete writing. That approach would effectively eliminate the parol-evidence rule. But the Court also declined to apply the Restatement criteria mechanically, because their purpose is to determine whether the parties actually intended the writing to be the complete embodiment of their agreement.