Rosenbaum v. Bauer was a United States Supreme Court case that addressed the issue of whether a contract between two parties was valid. The case involved a dispute between two parties, Rosenbaum and Bauer, over a contract for the sale of a piece of real estate. The contract stated that the sale was to be completed within a certain period of time, but Bauer failed to complete the sale within the specified time frame. Rosenbaum argued that the contract was valid and that Bauer was in breach of the contract. Bauer argued that the contract was invalid because it was not properly executed. The Supreme Court held that the contract was valid and that Bauer was in breach of the contract. The Court found that the contract was properly executed and that Bauer had failed to fulfill his obligations under the contract. The Court also held that Rosenbaum was entitled to damages for the breach of contract. The Court's decision in Rosenbaum v. Bauer established that contracts must be properly executed in order to be valid and enforceable. The Court also established that parties who fail to fulfill their obligations under a contract are liable for damages. This case serves as an important reminder that contracts must be properly executed and that parties must fulfill their obligations under the contract in order to avoid liability for damages.

Justice Field delivered the dissenting opinion in Rosenbaum v. Bauer, arguing that the majority had incorrectly interpreted and applied the law to this case. He argued that under California's Civil Code, a contract was formed when both parties agreed to its terms and conditions; however, he noted that there were two exceptions: if one party lacked capacity or if fraud was involved. In this case, Justice Field believed it should be determined whether either of these exceptions applied before deciding on liability for breach of contract. Furthermore, he argued that since no evidence had been presented regarding fraud or lack of capacity by either party at trial level - only allegations - then summary judgment should not have been granted in favor of defendant Bauer without further inquiry into those issues first.