Interference 103,482
R’ are identical or different and are an alkyl radical having
1 to 14 carbon atoms or R and R’ combine with the carbon atoms
joining them together to form a ring, at least in the presence
of a comonomer. Accordingly, we are not persuaded by Ewen’s
arguments, based on Dr. Gauthier’s unsupported opinions, that
certain processes which Dolle claims are incapable of being
used to prepare a syndio-isoblock polymer having molecular
chains in which syndiotactic and isotactic sequences are
present, i.e., are inoperable.
While we generally agree with Dr. Gauthier’s view that
the terms “syndio-isoblock polymer”, “syndiotactic and
isotactic sequences”, and “sequence length is 3 to 50 monomer
units” are classically defined in reference to stereochemical
configurations of the monomer units of polypropylene and
alpha-polyolefins relative to the planes of their polymeric
chains, skilled artisans have presumed their applicability to
other polyolefins.
For example, see Ewen, U.S. 5,036,034 (Appendix F), column 4,
lines 50-68. Ewen states, “Olefins, especially propylene, may
be polymerized to form polyolefins in various forms:
isotactic, syndiotactic and atactic” (Ewen, U.S. Patent
5,036,034, col. 1, l. 12-14). Ewen et al., U.S. 4,892,851 (EE
97
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