Reading
Chapter 17 (Parol Evidence Rule, continued). Restatement (Second) §§ 209, 210, 213, 216.
Time budget
- Floor
- ~40 min — R2d § 209 + Gianni. The doctrine the next class assumes you have covered.
- Target
- ~75 min — Floor + UAW-GM v. KSL + R2d § 210 + synthesis.
- Ceiling
- ~110 min — Target + Practice problems + open-discussion on the synthesis question.
By the end of this class, you can
- Distinguish Williston's four-corners approach from Corbin's contextualist approach on a contested writing.
- Apply the exceptions to the parol evidence rule (fraud, mistake, condition precedent, separate consideration) to a hypothetical.
- Evaluate which approach (Williston or Corbin) better serves the parties' ex ante drafting incentives in a sophisticated commercial transaction.
We continue with the Parol Evidence Rule, moving from the basic doctrine to the question that actually decides cases: how does a court determine whether a writing is integrated, and how much may it look outside the document to find out? This is where the two great theories of contract interpretation — Williston’s objectivism and Corbin’s subjectivism — diverge, and where the merger clause becomes the central battleground.
The integration test
The PER governs whether evidence of prior or contemporaneous agreements can supplement or contradict a written contract. It runs in steps.
R2d § 209. Integrated agreements. An integrated agreement is a writing constituting a final expression of one or more terms. If the writing is not final, the rule does not apply at all. If it is final, the next question is how complete it is.
R2d § 210. Complete vs. partial integration. A completely integrated agreement is a final and exclusive statement of all its terms; it discharges even consistent additional prior terms. A partially integrated agreement is final but not exhaustive; it bars contradictory prior terms but admits consistent additional ones.
R2d § 213. The rule itself. A binding integrated agreement discharges prior agreements to the extent it is inconsistent with them; a completely integrated agreement discharges prior agreements within its scope.
R2d § 216. Consistent additional terms. Evidence of a consistent additional term supplements an integrated agreement unless the court finds complete integration. An agreement is not completely integrated where the omitted term was agreed for separate consideration, or is one “that in the circumstances might naturally be omitted from the writing.” This collateral-agreement gateway is the most-confused PER exception.
The Williston/Corbin split. The objectivist (Williston) view, codified in the UAW-GM majority, holds that a merger clause conclusively settles integration: the court reads the four corners and stops. The subjectivist (Corbin) view holds that no writing can prove its own completeness, so extrinsic evidence is admissible even on the threshold integration question. Same doctrine, opposite rule for when the bar applies.
Cases
Gianni v. R. Russell & Co. shows the objectivist test at work without a merger clause: a storefront lease that expressly limited what the tenant could sell was held completely integrated, so the tenant’s claimed oral promise of an exclusive soda right was barred — because a term that pertinent would naturally have been written in.
UAW-GM v. KSL Recreation Corp. supplies the merger-clause rule: an integration clause conclusively forecloses parol evidence on the threshold integration question, absent fraud. A sophisticated party that signed a clause cannot later prove a collateral oral promise of a union-staffed hotel. The vigorous Corbin-based dissent — and the contrasting Sierra Diesel approach under the UCC — mark the subjectivist counter-position.
What you should be able to do
Run the integration test in order: final? completely or partially integrated? does an exception apply? Distinguish the objectivist from the subjectivist approach and predict how a merger clause changes the outcome under each. Apply § 216(2) to decide whether a collateral term “might naturally be omitted.” Next class moves from what enters the four corners to the quality of what is sold inside them: express and implied warranties under UCC Article 2.
Slide deck
Spacebar / arrow keys to advance. Press F for fullscreen. Click Print / PDF for handouts. PPTX export is professor-only.
Rules
Cases
- Gianni v. R. Russell & Co. 281 Pa. 320, 126 A. 791 (1924) Where the parties have adopted a writing as the final expression of their agreement on a subject, prior or contemporaneous oral agreements on the same subject are merged into the writing and cannot be proved to add to or vary its terms.
- UAW-GM Human Resource Center v. KSL Recreation Corp. 228 Mich. App. 486, 579 N.W.2d 411 (1998) A merger clause is strong, often conclusive, evidence that the writing is a complete integration of the parties' agreement. Once integration is established, the parol evidence rule bars evidence of prior or contemporaneous agreements that contradict or supplement the writing, including 'collateral' oral promises on the same subject.
Notes
Two-day chapter. The objectivist (Williston) and subjectivist (Corbin) approaches to integration are the spine of the day; the merger clause is where they collide.