Interference 103,482
could successfully be used to catalyze polymerization of an
olefin or olefins to produce a syndio-isoblock polymer having
molecular chains in which syndiotactic and isotactic sequences
are present and the average sequence length is 3 to 50 monomer
units, as we interpret the language of Count 2 of this
interference and interpreted the corresponding language in
Dolle’s claims in light of his specification. Count 2 of this
interference is directed only to those metallocene compounds
and catalysts, and processes of polymerizing olefins using
only those metallocene compounds and catalysts, which produce
syndio-isoblock polymers having molecular chains in which
syndiotactic and isotactic sequences are present and the
average sequence length of the syndiotactic and isotactic
sequences present is 3 to 50 monomer units.
We find that Ewen et al., U.S. Patent 4,892,851, does not
describe a single embodiment of Count 2 in the manner required
for Party Ewen to be accorded benefit of the July 15, 1988,
filing date of Application 07/220,007 from which U.S. Patent
4,892,851 issued.
However, Count 2 of this interference is alternatively
directed to those metallocene compounds and catalysts, and
processes of polymerizing olefins using those metallocene
118
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