Appeal 2007-0410
Application 10/414,066
skill in the art to combine the light emissive F8BT polymer of Burroughes
with the light emissive A-7 compound of Hosokawa for forming a mixed
luminescent layer of a light emitting device according to Mori and in a
manner that would have rendered the subject matter of representative claim
1 prima facie obvious?
We answer that question in the negative, on this record.
Consequently, we reverse the Examiner’s rejection for reasons stated herein
and as set forth in the Briefs.
As acknowledged by the Examiner (Answer 3), Mori “fails to teach
the specific first and second compounds under consideration” in this appeal,
much less a composition including both of those materials (Br. 3-4). As
argued by Appellants, Mori teaches an organic luminescent layer of an
electroluminescent element, which layer comprises a mixture of components
“chosen so as to have specific oxidation potential and reduction potential
relationships therebetween” (Mori, col. 2, ll. 61-63; Br. 9).
Given these teachings of Mori, the Examiner has not fairly explained
how and where Mori furnishes direction or motivation to pluck a particular
compound from among many disclosed by Hosokawa and a particular
polymer from among several disclosed by Burroughes for combination in an
organic emissive layer. In particular, the Examiner does not even attempt to
point out how the proposed combination of these two selected compounds,
one from each of Burroughes and Hosokawa, would have satisfied the
oxidation potential and reduction potential relationship criteria of Mori for
combination in an organic luminescent layer according to Mori. Rather, the
Examiner offers another basis for the proposed combination of the two
selected light emissive components, one from each of Hosokawa and
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