Summary

Joseph McKenna United States v. United Shoe Machinery Company of New Jersey…

The boot and shoe trade of the country was so restless under what was regarded and unhesitatingly denounced as a monopoly, strongly entrenched, that although the men engaged in that trade were now utterly dependent upon the United Company for the terms on which they might continue to do business, at least two groups of important manufacturers were formed before the commencement of this suit for the purpose of devising, if possible, some means of freeing themselves from conditions which they regarded, as the record abundantly shows, as oppressive and intolerable.
Source: Wikisource

Joseph McKenna United States v. United Shoe Machinery Company of New Jersey…

True it is that there is embraced in the patent grant the right or privilege to make licenses and agreements covering the use of the machines patented so long as such agreements are not in themselves unlawful. But the right to make restrictions in controlled by the general principles of law, and because he is at liberty to make them, the patentee may not make contracts in themselves illegal and certainly is not authorized to make contracts in violation of other statutes of the United States.
Source: Wikisource

Joseph McKenna United States v. United Shoe Machinery Company of New Jersey…

While a patentee should be protected in the exercise of rights secured to the inventor under the patent system enacted into the laws of the United States, there is nothing in the Act which gives the patentee a license to violate other statutes of the United States, and certainly not the one now under consideration. In my opinion the restrictive and prohibitive clauses of these leases are within the Sherman Act, as they are clearly in restraint of interstate trade and tend to monopolize in the sense that those terms have been defined in the decisions of this court.
Source: Wikisource

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