Appeal No. 95-0876
Application 08/006,517
Claims 2, 15, and 23 are rejected under 35 U.S.C. § 103 as unpatentable over
Kellgren and Smith. We take official notice of the ubiquitous nature of separation
facilitating manifestations found on rolled sheet material throughout our daily life. As
examples of these separation facilitating manifestations, we count paper towels, toilet
paper, plastic grocery produce bags, pop-up diaper wipes, and postage stamps in rolls or
sheets. All these examples point to a knowledge in the art that spaced separation-
facilitating manifestations may be included in rolled-up tapes or sheets for the universally
recognized advantage of convenient dispensing. Additionally, Smith shows such
perforations for separating individual products, in this case aprons, from a dispensing roll
of the products. Given this knowledge in the art we are of the opinion that it would have
been obvious to include such separation facilitating manifestations in the double-sided
adhesive tape of Kellgren for the suggested benefit of facilitating dispensing of the tape.
The teaching of the patent to Kellgren combined with the knowledge in the prior art would
have rendered claims 2, 15, and 23 obvious to one of ordinary skill in the art.
Summary
The rejection of claims 17 through 19 and 24 has been affirmed. The rejection of
claims 1 through 9, 13 through 15, and 20 through 23 under 35 U.S.C. § 103 as
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