Facts
- Rose owned a stone quarry and leased it for ten years to J. E. Dooley and Son, Inc.
- At the same time, Rose and Dooley executed a separate sealed stone-pricing agreement requiring Dooley to sell crushed stone to Rose at stated prices for the lease term.
- The agreement also required Dooley not to sell stone from the quarry to others (except the State Highway Commission) below specified minimum prices, creating a pricing preference for Rose.
- Dooley sought to sell its quarry business to Vulcan; Rose agreed to release Dooley only if Vulcan expressly assumed the lease and the pricing agreement.
- Vulcan sent Rose a letter stating it assumed both contracts and sold stone to Rose at the contract price for about one year.
- Vulcan then increased prices above the contract rate; Rose continued buying stone under protest for several years due to lack of a practical alternative source.
- Rose sued to recover the difference between the contract prices and the higher prices he paid.
Issues
- Whether the stone-pricing agreement was illegal and unenforceable under the Robinson–Patman Act or North Carolina antitrust law.
- Whether Vulcan, as purchaser of Dooley’s business and alleged assignee, became bound to perform Dooley’s executory obligations under the pricing agreement.
- Whether the action was governed by the limitations period for sealed instruments or the shorter period applicable to unsealed contracts based on Vulcan’s assumption letter.
- Whether Vulcan’s overcharges constituted one breach accruing at the first price increase or separate breaches accruing with each sale, and how damages should be measured.
Decision
- The court rejected Vulcan’s illegality defenses, holding Vulcan did not prove the contract violated federal or state antitrust law.
- The court held Vulcan became bound by the pricing agreement by expressly assuming it and accepting performance under it.
- The court applied the ten-year statute of limitations applicable to sealed instruments because the obligations enforced arose from the sealed pricing agreement.
- The court treated each overcharge as a separate breach, allowing recovery measured by the difference between contract prices and amounts paid, with interest.
- The judgment for Rose was largely affirmed, with limited refinement of accrual and damages treatment consistent with the separate-breach analysis.
Legal Principles
- Illegality is an affirmative defense; the party asserting it bears the burden of proof.
- Robinson–Patman Act liability requires proof that the discriminatory sale occurred in interstate commerce; proof that a seller generally engages in interstate commerce is insufficient.
- Differential pricing is not void under state antitrust law absent proof of prohibited restraint, monopoly, or competitive injury.
- When a purchaser-assignee expressly assumes an executory bilateral contract and accepts its benefits, the assignee is bound to perform the assignor’s remaining obligations and may be sued directly by the original promisee.
- Where the underlying obligation is a sealed instrument, an assignee who assumes that obligation is subject to the limitations period governing sealed instruments, even if the assumption is evidenced by an unsealed writing.
- For long-term supply arrangements with repeated transactions, each overcharge can constitute a separate breach with its own accrual, and damages are the overcharge amount plus interest.
Conclusion
The court enforced the sealed stone-pricing agreement against Vulcan as an assignee that expressly assumed the contract, rejected antitrust-based illegality for lack of required proof, applied the ten-year limitations period for sealed instruments, and allowed recovery for each overcharge as a separate breach measured by the contract-price differential plus interest.