Appeal No. 1996-2766 Application No. 08/258,909 Accordingly, the above quoted disclosure from Fu teaches that the compositions of this reference contain a protein- removing effective amount of surfactant. The claims on appeal require that “a protein-dissolving effective amount of surfactant is absent” from the claimed composition (see claim 15 on appeal). The examiner, not the appellants, bears the3 initial burden of presenting a prima facie case of obviousness. In re Oetiker, 977 F.2d 1443, 1445, 24 USPQ2d 1443, 1444 (Fed. Cir. 1992). The examiner has not shown or established, by evidence or convincing reasoning, why one of ordinary skill in the art would have excluded the effective protein-removing amount of surfactant used in the compositions of Fu. The examiner notes that the claims are drafted with the term “comprising” which opens the claim to additional adjuvants (Answer, page 5). This claim interpretation is not well taken since the plain meaning of the claims cannot be altered by the common interpretation of “comprising”, i.e., 3On this record, there is no allegation or evidence that the effective protein-removing by the surfactant of Fu differs from the “protein-dissolving” by the surfactant as recited in the claims on appeal. 5Page: Previous 1 2 3 4 5 6 7 8 9 10 NextLast modified: November 3, 2007