G.R. No. 72405 - PACMAC, Inc. vs. Intermediate Appellate Court

PACMAC, Inc. (petitioner) and VULCAN Manufacturing & Trading Corporation (respondent) had a long-standing business relationship beginning in 1953.
PACMAC was involved in trading and served as the exclusive distributor for VULCAN’s products based on an implied and later a formal written agreement.

Initially, PACMAC distributed VULCAN’s products under an implied exclusive arrangement from 1953 until August 1965.
In 1956, management consolidation occurred with key personnel (including Russell Elliott and Patrocinio Bautista) holding positions and shares in both companies.
A formal written exclusive distributorship contract was executed on December 6, 1962, covering two years (beginning November 16, 1962) for two specific products (sodium silicates and adhesives) and prohibiting PACMAC from dealing with competitive products in that category.
The written contract stipulated its own terms, including a fixed duration, with the understanding that after its expiration (November 16, 1964), the relationship might be subject to change.

Despite the written contract’s expiration, the business under the exclusive distributorship continued, and an oral agreement was purportedly reached that modified the termination provisions, requiring at least one year’s notice prior to termination.
VULCAN later alleged that PACMAC was delinquent in its payments and, on August 3, 1965, VULCAN unilaterally ceased deliveries of its products to PACMAC.
Correspondence exchanged on August 3, 1965 (letter from VULCAN advising cessation of deliveries and reply by PACMAC protesting the move) shows the conflict and contested nature of the termination.

The trial court found that PACMAC had been the exclusive distributor and that VULCAN’s sudden termination constituted a breach, causing damages.
The trial court quantified PACMAC’s damages based on diminished net income, calculating actual and compensatory damages along with awarding exemplary damages and attorney’s fees.
The appellate court, however, set aside the trial court decision by emphasizing that the written two-year contract superseded previous arrangements.
The appellate court applied the parol evidence rule (Section 7, Rule 130, Revised Rules of Court), holding that extrinsic evidence could not alter the written terms, thus ruling that no breach occurred after November 16, 1964.

PACMAC produced evidence of an oral agreement and subsequent correspondence indicating that the parties had agreed to extend the relationship with a one-year notice requirement before termination.
Testimonies and conflicting documentary evidence (including letters by Jose Basa and P.E. Bautista) were presented regarding the notice period (one-year vs. three-months).
The trial court found the credibility of PACMAC’s evidence stronger, given the volume of business and the preponderance of evidence showing reliance on the continued exclusivity.

Whether or not VULCAN’s cessation of deliveries on August 3, 1965 constituted a breach of the exclusive distributorship agreement with PACMAC.

Did the oral evidence proving a subsequent agreement (with a one-year notice period) override the written two-year contract’s termination provisions?
Was the unilateral termination by VULCAN justified upon the alleged nonpayment by PACMAC?

The appropriateness and correct application of the parol evidence rule in this case

Whether extrinsic evidence can be admitted to prove a subsequent agreement modifying the written terms of the contract.
Whether the appellate court erred in excluding such evidence when determining the termination’s validity.

How the loss of net income due to the termination should be calculated in compensatory terms.
Whether exemplary damages, attorney’s fees, and litigation expenses as claimed by PACMAC were properly adjusted by the trial court.