In the 1904 case of Cimiotti Unhairing Company v. American Fur Refining Company, the U.S Supreme Court dealt with a patent dispute between two companies involved in fur processing. The plaintiff, Cimiotti Unhairing Co., accused American Fur Refining Co. of infringing on their patented unhairing process that used an alkali solution to remove hair from animal hides more efficiently than traditional methods. The defendant argued that they had not infringed upon any valid patent as the method was already known and used in Europe before being patented by Cimiotti. The court ruled in favor of American Fur Refining Co., stating there was no infringement because the patent held by Cimiotti was invalid due to prior use and knowledge abroad which made it unpatentable under U.S law at that time. This ruling reinforced principles regarding novelty requirements for patents, emphasizing that if a technique or invention is already known or used elsewhere before its application for a patent, it cannot be considered novel or original and thus does not qualify for protection.

In the dissenting opinion for CIMIOTTI UNHAIRING COMPANY v. AMERICAN FUR REFINING COMPANY, it was argued that the patent in question should not have been invalidated. The justice disagreed with the majority's interpretation of what constitutes a new and useful process, asserting that even though some elements of Cimiotti’s method were already known, their combination resulted in an innovative and more efficient way to remove hair from animal hides. This view held that such improvements are precisely what patents are designed to protect and encourage. Furthermore, they contended that there was no evidence presented proving prior use or knowledge of this specific combined process before Cimiotti’s invention; thus he had every right to claim it as his own innovation under patent law.