In the case of Kellogg v. United States, the Supreme Court was asked to decide whether the United States had the right to tax a private individual's income. The case arose when the United States attempted to tax the income of a private individual, John Kellogg, who had received a pension from the United States government. Kellogg argued that the tax was unconstitutional because it violated the Fifth Amendment's prohibition against taking private property for public use without just compensation. The Supreme Court ultimately held that the United States did have the right to tax private individuals' income. The Court reasoned that the Fifth Amendment did not prohibit the taxation of private individuals' income, as long as the tax was imposed in a reasonable manner. The Court also noted that the tax was necessary to fund the government's operations and that it was not an unreasonable burden on the taxpayer. In conclusion, the Supreme Court held that the United States had the right to tax private individuals' income, as long as the tax was imposed in a reasonable manner. The Court also noted that the tax was necessary to fund the government's operations and that it was not an unreasonable burden on the taxpayer.

In the case of Kellogg v. United States, the Supreme Court was asked to decide whether a patent granted by Congress for an invention could be revoked if it was found that the inventor had not made full disclosure of his prior work on similar inventions. The majority opinion held that Congress had no authority to revoke patents and thus affirmed the lower court's decision in favor of Kellogg. However, Justice Field dissented from this ruling, arguing that Congress did have such power under its constitutional authority over intellectual property rights and patents. He argued further that since there were clear indications at trial that Kellogg had failed to disclose all relevant information about his prior work on similar inventions, he should not be allowed to benefit from a patent which would otherwise have been denied him due to lack of candor with regard to his previous efforts in this field.