Appeal No. 2005-0986
Application No. 09/727,904
of ensuring that no one other than the user is able to determine
what particular information item has been purchased. Appellants
argue that whereas the examiner admits that Nishioka fails to
teach or suggest the claimed use of a blinded version of a first
ciphertext portion of a signed ciphertext, and relies on Kyojima
to provide these missing teachings, Kyojima, in fact, fails to
provide such teachings.
Specifically, appellants contend that there is no teaching
in Kyojima regarding the use of a blinded version of a first
ciphertext portion of a signed ciphertext of a given information
item purchasable from a merchant. Rather, according to
appellants, Kyojima merely discloses a particular blind
decryption technique, and they have been unable to find any
mention in Kyojima of a signed ciphertext, much less a blinded
version of a first ciphertext portion of a signed ciphertext, as
claimed (brief-page 5).
Moreover, appellants argue, the examiner has not established
a “cogent motivation” (brief-page 5) for modifying the reference
teachings to reach the claimed invention because neither of the
references relates to processing of a blinded version of a first
ciphertext portion of a signed ciphertext of a given information
item purchasable from a merchant.
-6-
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 Next
Last modified: November 3, 2007