CAFC affirms PTAB in Tadayon case

Note the text:

See, e.g., In re Inland Steel Co., 265F.3d 1354, 1361 (Fed. Cir. 2001)

(“The fact that [a prior art reference] teaches that [a second step] in addition to [a

first step] produces optimal results does not negate [the

reference's] additional teaching that [the first step] is

effective even in [the absence of the second step.]”

link:  http://www.cafc.uscourts.gov/images/stories/opinions-orders/14-1804.Opinion.5-7-2015.1.PDF