What are “nonce” words in the context of 35 U.S.C. 112(f)?

“Nonce” words in the context of 35 U.S.C. 112(f) are generic terms that typically do not connote sufficiently definite structure to avoid invoking means-plus-function treatment. The MPEP 2181 provides examples of such words: “Examples of generic terms (nonce words) include “mechanism for,” “module for,” “device for,” “unit for,” “component for,” “element for,” “member for,” “apparatus…

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