In the case of Meagher v. Minnesota Thresher Manufacturing Company, 1891, the U.S Supreme Court was tasked with determining whether a patent for an improvement in grain threshing machines had been infringed upon. The plaintiff, Meagher, held a patent for his invention which he claimed was copied by the defendant company without permission or compensation. However, after examining both designs closely and considering expert testimony on their similarities and differences, it became clear that while there were some resemblances between them due to their shared purpose (threshing grain), they functioned in fundamentally different ways - thus making them distinct inventions rather than one being an unauthorized copy of another. Therefore, the court ruled in favor of Minnesota Thresher Manufacturing Company stating that no infringement had occurred as its machine did not use or incorporate any novel features patented by Meagher.

The dissenting opinion in the case of Meagher v. Minnesota Thresher Manufacturing Company disagreed with the majority's interpretation of contract law and its application to this particular case. The dissent argued that there was a clear contractual agreement between Meagher and the company, which obliged both parties to fulfill their respective obligations under said contract. They contended that by failing to deliver on its promise, the company had breached this agreement, thus making it liable for damages incurred by Meagher as a result of this breach. Furthermore, they believed that any ambiguity or uncertainty regarding terms should not be used as an excuse for non-performance but rather interpreted against the party who drafted such unclear terms - in this instance, being the manufacturing company itself.