In the 1930 case of DeForest Radio Co. v. General Electric Co., the U.S Supreme Court ruled in favor of General Electric (GE). The dispute centered around patent rights for a certain type of vacuum tube used in radio technology, with both companies claiming ownership. GE had purchased its patent from inventor Irving Langmuir, while DeForest Radio Company claimed that one of their employees had invented it independently at an earlier date and thus they held the legitimate patent. However, after examining evidence including lab notebooks and testimonies from scientists involved in the invention process, the court concluded that Langmuir was indeed the original inventor and therefore GE's claim to his patent was valid. This decision upheld lower courts' rulings which also favored GE.

In the dissenting opinion for DeForest Radio Co. v. General Electric Co., it was argued that the majority's decision to uphold GE's patent infringed upon DeForest's rights as an inventor and stifled innovation in the radio industry. The dissenting justices believed that GE had not invented anything new, but merely improved on existing technology, which should not be grounds for a patent monopoly. They contended that granting such broad patents would discourage other inventors from developing new technologies out of fear of litigation, ultimately hindering progress in this rapidly evolving field. Furthermore, they expressed concern over potential anti-competitive effects of upholding such monopolistic patents and emphasized the importance of maintaining a balance between rewarding invention and promoting competition.