Appeal No. 2004-0779
Application No. 09/790,185 Page 2
BACKGROUND
Appellants' invention relates to a rewritable data storage
medium having erasable identification marks. An understanding of
the invention can be derived from a reading of exemplary claim 1,
which is reproduced as follows:
1. A data storage medium, comprising:
a rewritable recording layer provided with a tracking
structure having tracks, said layer having a data recording area;
and
an erasable identification mark which is present in an
identification mark area other than the data recording area and
which extends over a radial width of several tracks of the
tracking structure in the data recording area, wherein the data
recording area has a first tracking structure, and wherein the
identification mark area has a second tracking structure
substantially different from the first tracking structure.
The prior art references of record relied upon by the
examiner in rejecting the appealed claims are:
Satoh et al. (Satoh) 4,535,439 Aug. 13, 1985
Oshima et al. (Oshima(‘551)) 5,805,551 Sep. 8, 1998
Aoki 5,999,504 Dec. 7, 1999
Oshima et al. (Oshima(‘299)) 6,266,299 July 24, 2001
(filed May 20, 1999)
Oshima, Japanese Patent WO98/27553 June 25, 1998
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