In the case of Consolidated Roller Mill Company v. Walker, 1890, the U.S Supreme Court was tasked with determining whether a patent for an improvement in roller mills was valid. The plaintiff, Consolidated Roller Mill Company alleged that Walker had infringed on their patent rights by using a similar design to theirs without permission. However, upon review of the evidence and arguments presented before it, the court ruled in favor of Walker stating that there were no new or novel features in Consolidated's patented design which could warrant protection under patent law. The court further stated that any skilled mechanic familiar with roller mills would be able to come up with such improvements as those claimed by Consolidated without requiring inventive skill or genius; hence they were not eligible for patent protection.

In the dissenting opinion for Consolidated Roller Mill Company v. Walker, Justice Bradley argued that the patent in question was not a new invention but rather an improvement of existing machinery and therefore should not be granted exclusive rights. He emphasized that patents are meant to protect original ideas, not slight modifications or improvements on pre-existing inventions. The justice believed granting such broad protections would stifle innovation and competition by allowing companies to monopolize industries with minor tweaks to current technology. Furthermore, he expressed concern over potential abuse of the patent system if it were used as a tool for economic domination rather than fostering creativity and progress.