Appeal No. 96-2623 Application No. 08/240,095 We also do not consider the declaration to have presented sufficient evidence that the appellants' invention fills a long felt need. Establishing a long felt need requires objective evidence that an art recognized problem existed in the art for a long period of time without solution. Thus, the need must have been a persistent one that was recognized by those of ordinary skill in the art. See In re Gershon, 372 F.2d 535, 539, 152 USPQ 602, 605 (CCPA 1967). The declaration does not establish that a long felt need existed since the declaration fails to provide any evidence that an art recognized problem existed in the art for a long period of time without solution. In the final analysis, evidence of nonobviousness, although being a factor that certainly must be considered, is not necessarily controlling. Newell Companies, Inc. v. Kenney Manufacturing Co., 864 F.2d 757, 768, 9 USPQ2d 1417, 1426 (Fed. Cir. 1988). In view of the foregoing, we are satisfied that when all the evidence and arguments are considered, the totality of the rebuttal evidence and arguments cannot be accorded substantial weight, so that, on balance, it fails to outweigh the evidence of 23Page: Previous 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 NextLast modified: November 3, 2007