The U.S. Supreme Court case, U.S. Industrial Chemicals, Inc. v. Carbide & Carbon Chemicals Corp., 1941 revolved around a patent dispute between the two companies over a method of producing ethylene glycol - an important industrial chemical used in antifreeze and other products. The plaintiff, U.S Industrial Chemicals (USIC), claimed that Carbide & Carbon was infringing on their patented process for making this compound by using high pressure hydrogenation of monoethylene glycol to produce diethylene glycol and triethylene glycol without paying royalties or obtaining permission from USIC who held the patent rights for this process since 1932. Carbide & Carbon argued that they were not violating any patents because their method was different; it involved low-pressure hydrogenation instead of high-pressure as specified in USIC's patent claim. The court ruled in favor of Carbicde & Carbon stating that while both processes resulted in similar end products, they were fundamentally different methods with distinct steps and conditions which made them separate inventions under law despite having same purpose i.e., production of ethylene glycols.

In the dissenting opinion for U.S. Industrial Chemicals, Inc. v. Carbide & Carbon Chemicals Corp., it was argued that the majority's decision to uphold a patent on a process of producing ethylene glycol from ethylene oxide went against established principles of patent law and could have negative implications for future innovation in industry. The dissent emphasized that patents should only be granted for truly novel inventions, not simply new applications of existing knowledge or technology. In this case, they believed that the chemical reaction at issue was already well-known in scientific literature and thus did not meet the criteria necessary to warrant a patent under U.S law. They also expressed concern about how granting such broad patents could stifle competition and discourage further research and development by other companies within the same field.