What is the significance of In re Otto in patent law?

In re Otto is a significant case in patent law, particularly for apparatus claims. According to MPEP 2115, the case established that: “[I]nclusion of the material or article worked upon by a structure being claimed does not impart patentability to the claims.” In re Otto, 312 F.2d 937, 136 USPQ 458, 459 (CCPA 1963) The…

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