Appeal No. 2006-0697
Reexamination 90/006,402
examiner did not point out the specifics of how Chan describes its implementation of a datagram
service. Nothing which the examiner has cited from Chan goes into sufficient detail. The
particulars of implementing a datagram service with the Level-0, Level-1, and Level-2 networks
of Chan are left largely to one’s imagination or speculation. The examiner has resorted to
several findings which are unsupported.
On page 48 of the answer, in lines 18-22, the examiner concludes that each packet or
datagram under Type C communications in Chan must be examined by each of the Level-0,
Level-1, and Level-2 intermediate networks in order to figure out the route toward the
destination and forward the datagram along the route, based solely on the fact that a datagram
itself would carry sufficient address information for routing, independent of other packets, and
does not rely on earlier exchanges. Similarly, on page 50 of the answer, the examiner concludes
that each of the Level-0, Level-1, and Level-2 routers in Chan definitely has the ability to
perform intelligent routing based on the address information within each transmission packet,
because each datagram is a self-contained packet, independent of other packets, which carries
sufficient address information for routing from source to destination without relying on earlier
exchanges. The reasoning is misplaced. The fact that each data packet contains enough
destination address information for it to be routed independently of other packets without need to
rely on other packets or earlier exchanges is not enough to demonstrate that “each” of the Level-
0, Level-1, and Level-2 routers must necessarily read that destination address and perform
intelligent routing based on the destination address just read from the data packet or datagram.
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