Interference 103,482
“syndio-isoblock polymer[(s)] having molecular chains in which
syndiotactic and isotactic sequences are present and the
sequence length is 3 to 50 monomer units” in Dolle’s claims to
read on
the syndiotactic, highly isotactic, or isotactic stereoblock
polypropylenes which, according to Dr. Scott, must inherently
include 3 monomer unit “mistakes” and are well known in the
art (RE 4-5). We find that Dolle clearly distinguishes the
syndio-isoblock polymer[s] he describes from syndiotactic,
highly isotactic, and isotactic stereoblock polymers which
were known in the art at the time Dolle’s applications were
filed (Spec., pp. 1-2). Thus, it would appear much more
reasonable from the teaching in Dolle’s specification to
interpret the phrase “sequence length” in the phrase “sequence
length is 3 to 50 monomer units” as an average sequence length
to be consistent with Dolle’s examples. This interpretation
is most consistent with Dolle’s concerted effort to
distinguish syndio-isoblock polypropylenes having molecular
chains in which syndiotactic and isotactic sequences are
present and the sequence length is 3 to 50 monomer units
from known polypropylenes having molecular chains in which
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