In the case of Earle v. Myers in 1907, the United States Supreme Court ruled on a dispute involving patent rights and royalties. The plaintiff, Earle, had purchased a patent from its original owner and then licensed it to Myers for use in manufacturing certain goods. However, after some time Myers stopped paying royalties claiming that he discovered prior art which invalidated the patent's claims. In response to this claim by Myers, Earle sued him for breach of contract. The court held that even if there was an issue with the validity of the patent itself due to prior art or any other reason; it did not absolve Myers from his contractual obligations under their agreement as long as he continued using said patented technology in his business operations. Therefore, regardless of whether or not there were issues with the underlying validity of the patents themselves - since they were still being used by Myer's company - he was obligated to continue making royalty payments per their agreement until such time as those patents were officially declared invalid by a competent authority.

In the dissenting opinion for Earle v. Myers, it was argued that the majority's decision to uphold a tax on insurance companies operating in multiple states violated principles of federalism and interstate commerce. The dissenting justices believed that this tax constituted an undue burden on interstate commerce because it effectively penalized out-of-state insurers for conducting business within Louisiana. They contended that such a levy should be considered unconstitutional as it interfered with free trade among states, which is protected under the Commerce Clause of the Constitution. Furthermore, they expressed concern about potential repercussions if other states were to enact similar taxes, potentially leading to retaliatory taxation and economic protectionism at state level - both contrary to national unity and economic integration promoted by federal law.