Appeal No. 1999-2092 Page 16 Application No. 08/798,718 276, 205 USPQ 215, 219 (CCPA 1980) and In re Aller, 220 F.2d 454, 456, 105 USPQ 233, 235 (CCPA 1955). As stated in In re Huang, 100 F.3d 135, 139, 40 USPQ2d 1685, 1688 (Fed. Cir. 1996): [t]his court and its predecessors have long held, however, that even though applicant's modification results in great improvement and utility over the prior art, it may still not be patentable if the modification was within the capabilities of one skilled in the art, unless the claimed ranges "produce a new and unexpected result which is different in kind and not merely in degree from the results of the prior art." Additionally, as stated in In re Woodruff, 919 F.2d 1575, 1578, 16 USPQ2d 1934, 1936 (Fed. Cir. 1990): [t]he law is replete with cases in which the difference between the claimed invention and the prior art is some range or other variable within the claims. . . . These cases have consistently held that in such a situation, the applicant must show that the particular range is critical, generally by showing that the claimed range achieves unexpected results relative to the prior art range [citations omitted]. In the present case, however, the appellant has not even alleged, must less established, that the claimed ratio (i.e., the length of the line of weakness to the length of one sidePage: Previous 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 NextLast modified: November 3, 2007