Cochrane v. Deener is a United States Supreme Court case that was decided in 1895. The case involved a dispute between two parties over a contract for the sale of cotton. The plaintiff, Cochrane, was a cotton broker who had entered into a contract with the defendant, Deener, to purchase cotton from him. The contract stated that the cotton was to be delivered to Cochrane at a certain price. However, when the cotton was delivered, Deener refused to accept payment, claiming that the price had changed since the contract was signed. Cochrane then brought suit against Deener, claiming that the contract was valid and that Deener was obligated to accept payment. The Supreme Court agreed with Cochrane, ruling that the contract was valid and that Deener was obligated to accept payment. The Court held that a contract is binding and enforceable, even if the price of the goods changes after the contract is signed. The Court also held that a party cannot unilaterally change the terms of a contract without the consent of the other party. This case established an important precedent in contract law, affirming the principle that a contract is binding and enforceable, even if the price of the goods changes after the contract is signed. It also established the principle that a party cannot unilaterally change the terms of a contract without the consent of the other party.

In the case of Cochrane v. Deener, Justice Field delivered a dissenting opinion in which he argued that the majority had erred in its interpretation of the contract between Cochrane and Deener. He asserted that under the terms of their agreement, both parties were obligated to perform certain acts before either could receive any benefit from it. The majority had found otherwise, holding that one party was entitled to payment without having performed his part first. In Justice Field's view, this decision would encourage people to enter into contracts with no intention or expectation of fulfilling them; thus undermining public confidence in contractual obligations and creating an environment where agreements are not taken seriously by either side. Furthermore, he noted that such a ruling would be unfair as it would allow one party to reap all benefits while leaving another with nothing for their efforts or investment - something which is clearly against public policy and should be avoided whenever possible.