Assuming novelty, the USPTO, PTAB, or a court must establish
that the claimed invention would have been obvious over the prior
art. In other words, even though the prior art does not identically
disclose or describe the invention, one may not obtain a patent on
the invention if the differences between the invention and the
prior art are such that the invention as a whole would have been
obvious to the person of ordinary skill in the pertinent art at the
pertinent time. 35 U.S.C. §103. 35 U.S.C. §102 (both pre-
AIA §102 and AIA §102) defines the prior art that can be
used to invalidate a patent for obviousness under §103. AIA
§102, and its definitions of prior art, went into effect March
16, 2013.