Appeal No. 1997-2087
Application No. 08/203,837
said liquid medium more susceptible to being killed by hydrogen peroxide in said liquid
medium than by hydrogen peroxide in a substantially identical liquid medium in the
absence of said cellulose decomposing enzyme component and to form protein deposits
from said cellulose decomposing enzyme component in the presence of hydrogen
peroxide on said contact lens, said hydrogen peroxide destroying component being
present in an amount effective to destroy all the hydrogen peroxide contained in said liquid
medium, and said delayed release component being present in an amount effective to
delay the release in said liquid medium of said hydrogen peroxide destroying component
for a sufficient time to allow a contact lens introduced into said liquid medium at
substantially the same time as said composition to be disinfected.
The references relied upon by the examiner are:
Kaspar et al. (Kaspar) 4,568,517 Feb. 4, 1986
Huth et al. (Huth) 4,670,178 June 2, 1987
Kruse et al. (Kruse) 4,767,559 Aug. 30, 1988
Izumi et al. (Izumi), “The efficacy of disinfection system using hydrogen peroxide against
acanthamoeba,” Journal of the Japanese Contact Lens Soc., Vol. 33, No. 4,
pp. 282-86 (1991)
Grounds of Rejections
Claims 4, 6, 8 through 11, 15, 18, 19, 21 through 23, 25, 26, and 28 stand rejected
under 35 U.S.C. § 103. As evidence of obviousness, the examiner relies upon Kruse,
Kaspar, Huth and Izumi.
We reverse.
Background
The present invention is directed to compositions and methods for disinfecting
a contact lens (specification, page 1). Specifically, the present invention relates to
compositions and methods "useful to facilitate the action of hydrogen peroxide in
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