Appeal 2007-2677
Application 10/622,229
Examples of cationic agents and resins include
polyalkylenepolyamines and silica coupling agents with primary, secondary,
or tertiary amino groups or quaternary ammonium groups. Bi at [0029].
The recording sheet is said to provide excellent gloss, fast dry time,
excellent image quality, and superior water resistance and handle ability. Bi
at [0008].
6. Alexander
The invention disclosed in Alexander is directed to aquasols of a
dense silica core coated with a polyvalent metal-oxygen compound of the
class consisting of metal oxides, metal hydroxides, and hydrated metal
oxides. Alexander 1:13-17.
D. PRINCIPLES OF LAW
A claimed invention is not patentable if the subject matter of the
claimed invention would have been obvious to a person having ordinary skill
in the art. 35 U.S.C. § 103(a); KSR Int’l Co. v. Teleflex Inc., 127 S. Ct.
1727, 82 USPQ2d 1385 (2007); Graham v. John Deere Co., 383 U.S. 1
(1966).
Facts relevant to a determination of obviousness include (1) the scope
and content of the prior art, (2) any differences between the claimed
invention and the prior art, (3) the level of skill in the art, and (4) any
relevant objective evidence of obviousness or non-obviousness. KSR, 127 S.
Ct. at 1734, 82 USPQ2d at 1389, Graham, 383 U.S. at 17-18.
One of ordinary skill in the art is presumed to have skills apart from
what the prior art references expressly disclose. See In re Sovish, 769 F.2d
738, 743, 226 USPQ 771, 774 (Fed. Cir. 1985). A person of ordinary skill is
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