What is the “quid pro quo” for using means-plus-function claim language?
The “quid pro quo” for using means-plus-function claim language refers to the trade-off between the convenience of using such language and the duty to link or associate structure to function. This concept is explained in MPEP 2182, which cites the Federal Circuit case B. Braun Medical, Inc. v. Abbott Labs:
“We hold that, pursuant to [35 U.S.C. 112, sixth paragraph], structure disclosed in the specification is ‘corresponding’ structure only if the specification or prosecution history clearly links or associates that structure to the function recited in the claim. This duty to link or associate structure to function is the quid pro quo for the convenience of employing 112, paragraph 6.”
In essence, the quid pro quo means that in exchange for the convenience of using broad functional language in claims, inventors must provide clear linkage in the specification between the claimed function and the corresponding structure. This ensures that the scope of the claim is properly defined and understood by those skilled in the art.
To learn more: