“Section 112(a) of Title 35 requires that a patent include a specification containing ‘a written description of the invention . . . in such full, clear, concise, and exact terms as to enable any person skilled in the art . . . to make and use the same.’”
“The Federal Circuit held that a patent need not expressly state the absence of a feature in order to support a negative limitation in the specification, and did not identify what, if anything, must be present in the written description to support such a limitation.”
“The question presented is:”
“Whether, under 35 U.S.C. ยง 112(a), a patent specification must include a written description supporting a claimed negative limitation.”
