How does 35 U.S.C. 112(f) interact with other requirements of 35 U.S.C. 112?

While 35 U.S.C. 112(f) permits a particular form of claim limitation, it does not create exceptions to other requirements of 35 U.S.C. 112. The MPEP states:

“While 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, permits a particular form of claim limitation, it cannot be read as creating an exception either to the description, enablement or best mode requirements of 35 U.S.C. 112(a) or pre-AIA 35 U.S.C. 112, first paragraph or the definiteness requirement of 35 U.S.C. 112(b) or pre-AIA 35 U.S.C. 112, second paragraph.”

This means that even if a claim uses means-plus-function language, it must still meet all other requirements of 35 U.S.C. 112, including enablement, written description, and definiteness.

To learn more:

• 35 U.S.C. 112(f)
• means-plus-function
• enablement
• written description
• definiteness