The Federal Circuit reversed the Board's decision finding that the Board erred by (1) improperly relying on inherency to find obviousness because the proper analysis is not whether a property is inherent but whether unknown properties are unexpected; (2) requiring Honeywell to establish that one of ordinary skill in the art would've expected failure; instead in a reexam, the burden is on the examiner to show that one of ordinary skill would've had a motivation to combine the references with a reasonable expectation of success; (3) concluding that unpredictability indicates obviousness; and (4) in rejecting Honeywell's objective evidence of nonobviousness.
Full text of the opinion is available here.