In the 1949 case of Powell et al. v. United States Cartridge Co., the Supreme Court ruled on a dispute involving patent infringement and antitrust laws. The United States Cartridge Company had patented a process for making shotgun shells, which it claimed was infringed upon by several other companies including Remington Arms Company and Winchester Repeating Arms Company. These defendants argued that U.S. Cartridge's patents were invalid due to prior use and obviousness, but also alleged that even if valid, they were unenforceable because U.S. Cartridge had misused them in violation of antitrust laws by tying sales of its patented products to unpatented ones. The court found in favor of U.S.Cartridge Co., ruling that their patents were indeed valid and enforceable as there was no evidence proving otherwise or showing misuse under antitrust law principles.

In the dissenting opinion of Powell et al. v. United States Cartridge Co., it was argued that the majority's decision to award damages for breach of contract was incorrect because there had been no actual loss suffered by the plaintiff, U.S. Cartridge Co., as a result of government action during World War II. The dissenters believed that since the company did not lose any profits due to its inability to fulfill other contracts or opportunities, and in fact made substantial profits from other war contracts, it should not be awarded further compensation from this particular contract with Powell et al.. They also disagreed with how damages were calculated based on hypothetical scenarios rather than concrete evidence of financial harm caused directly by non-performance under this specific agreement.