How do patent examiners use Notes in CPC schemes?

Patent examiners rely heavily on Notes in CPC schemes to ensure accurate and consistent classification of patent applications. The MPEP 905.01(a)(2) provides insight into how Notes are structured: “Instruction in a ‘Note’ is applied only to the CPC place where it appears, including all its hierarchically lower places.” Patent examiners use Notes in several ways:…

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