Guidelines (Graham v John Deere)
a.    Identify the prior art and compare to invention. Note the differences.
(A)    What counts as  prior art? Everything from 102:
(1)    Prior inventions that were “known” or “used in the U.S. [ 102(a)].
(2)    Patents and printed publications anywhere in the world [ 102(b)].
(3)    Earlier inventions made in the U.S. and not abandoned, suppressed or concealed [ 102(g)].
(4)    Information contained in prior patent or published patent application [ 102(e)].
(B)    When is prior art pertinent?
(1)    If is from a relevant or analogous art, regardless of the problem to be solved OR
(2)    Even if not from the same field, it is reasonably related to the particular problem from which the inventor is involved.
b.    Were the differences as a whole obvious at the time of invention to person of ordinary skill in the art?
(A)    Hindsight Bias: To invalidate patent there must have been obviousness at time of invention, can’t just argue that it is obvious now.
(B)    Person skilled in art: Depends on what ordinary skill is in the art. (SA34)
(1)    What is the average education level of person in this area? High school? PhD  w/10 yrs of experience?
(2)    What is the general types of problems person skilled in art would be exposed to?
(C)    While an invention can only be anticipated (shown to lack novelty) through a single prior art reference containing all the elements of the invention in the same arrangement, obviousness can be demonstrated by combining two or more pertinent prior art.