Interference 103,482
531 F.2d 1062, 1067, 189 USPQ 415, 419 (CCPA 1976); Wagoner v.
Barger, 463 F.2d 1377, 1380, 175 USPQ 85, 86-87 (CCPA 1972);
Storcheim v. Daugherty, 410 F.2d 1393, 1396, 161 USPQ 679, 682
(CCPA 1969); In re Filstrup, 251 F.2d 850, 853, 116 USPQ 440,
442 (CCPA 1958). We previously found, and here repeat our
finding, that no polymer produced by a process exemplified in
Ewen et al., U.S. Patent 4,892,851, for which the pentad
distribution data from C-13 NMR spectrum is reported, is 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 that language in the context of Dolle’s claims in
light of Dolle’s specification.
While we find that the formulas of the metallocene
compounds Ewen et al., U.S. Patent 4,892,851 (EE I), suggest
for use in preparing the syndiotactic polyolefins they
generically describe certainly encompass metallocenes defined
in Count 2 (see Ewen
et al., U.S. Patent 4,892,851 (EE I), col. 3, l. 19-35; col.
4, l. 48, to col. 5, l. 12; and col. 13, l. 59, to col. 14, l.
5), we find no evidence whatsoever in the patent disclosure
that any of the metallocenes therein generically described
117
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