Appeal No. 1999-2115 Application No. 08/724,574 desirability or motivation for using such a reflowing step in Yu '843. It is only with the benefit of the appellants' own disclosure that the examiner has arrived at a conclusion of obviousness. In re Warner, 397 F.2d 1011, 1016, 154 USPQ 173, 177 (CCPA 1967) ("[W]here the invention sought to be patented resides in a combination of old elements, the proper inquiry is whether bringing them together was obvious and not, whether one of ordinary skill, having the invention before him, would find it obvious through hindsight to construct the invention from elements of the prior art."); In re Rouffet, 149 F.3d 1350, 1359, 47 USPQ2d 1453, 1459 (Fed. Cir. 1998) ("[T]he Board must explain the reasons one of ordinary skill in the art would have been motivated to select the references and to combine them to render the claimed invention obvious."); In re Dembiczak, 175 F.3d 994, 999, 50 USPQ2d 1614, 1617 (Fed. Cir. 1999) ("[T]he best defense against the subtle but powerful attraction of a hindsight-based obviousness analysis is rigorous application of the requirement for a showing of the teaching or motivation to combine prior art references."). For these reasons, we cannot uphold rejection I. The examiner has relied on Tang only for the teaching relating to a thermal anneal tool as recited in appealed claim 7Page: Previous 1 2 3 4 5 6 7 8 9 10 11 NextLast modified: November 3, 2007