O'Reilly v. Morse
United States Supreme Court
56 U.S. 62 (1854)
Samuel Morse (defendant) was issued a patent for his telegraph in 1840 and again in 1848. Morse’s two patent applications claimed that Morse had ownership rights to the telegraph machinery that he had described in his application’s specifications. However, in the eighth claim in Morse’s patent application, Morse also claimed ownership rights to any future invention that used electro-magnetism to print characters or letters at a distance. O’Reilly (plaintiff) sued Morse to challenge the scope of Morse’s patent claim.
Rule of Law
Holding and Reasoning (Taney, C.J.)
Dissent (Wayne, J.)
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