Interference 103,482
Patent 5,036,034, col. 1, l. 14-25). Ewen defines a
“syndiotactic polymer”
as containing “principally units of exactly alternating
stereoisomers” by the Fischer projection
\ \
\ \ \
and in Bovey’s NMR nomenclature as rrrr (Ewen U.S. Patent
5,036,034, col. 1, l. 34-45). The structure of Ewen’s
“hemiisotactic polymers” is represented by Fischer projections
(3)(Ewen U.S. 5,036,034, col. 1, l. 57-65) and (6)(Ewen U.S.
5,036,034, col. 4, l. 23-36) where “[t]he second carbon atom
in formula (6) is the asymmetric carbon atom, i.e., the one
which does not have identical groups attached, hence
‘asymmetric’” (Ewen U.S. 5,036,034, col. 2, l. 8-10).
Most pertinent to the meaning persons skilled in the art
would have attributed to the references to ethylene and
propylene as polymerizable monomers for producing polymers
having syndiotactic and isotactic sequences in Dolle’s claims
are the corresponding definitions of the terms and list of
monomers in Ewen’s U.S. Patent 4,794,096 (Appendix G), at
column 2,
lines 3-42. In reference to the scope of polymerizable
monomers which persons skilled in the art would consider for
99
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