A Case Where Non-Enabled Art Failed To Establish Obviousness

Holding
In
Raytheon Technologies Corp. v. General Electric Co.,
2021 U.S. App. LEXIS 10961 (Fed. Cir., Apr. 16, 2021), the Federal
Circuit (Judges Chen, Lourie, and Hughes) reversed the PTAB's
Final Written Decision that certain challenged claims of
Raytheon's U.S. Patent No. 9,695,751 ("the '751
patent") would have been unpatentable as obvious. The Federal
Circuit held that the relied-upon prior art failed to enable one of
ordinary skill to make and use the claimed invention.
Background
Raytheon's patent is directed to gas turbine engines and
recites a "'power density' range." The claims
read, in relevant part:
A gas turbine engine comprising:
a fan including a plurality of fan blades . . . ; a compressor

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