Appeal No. 1998-1435 Page 6
Application No. 08/132,584
through the air delivery tube by heat transfer contact with an
elongated heating element disposed within the air delivery
tube; pressurizing the air distribution plenum chamber with
the heated air ...." Accordingly, the claims each require
heating air before the air is pressurized.
The examiner fails to show a suggestion of the
limitations in the prior art. “Obviousness may not be
established using hindsight or in view of the teachings or
suggestions of the inventor.” Para-Ordnance Mfg. v. SGS
Importers Int’l, 73 F.3d 1085, 1087, 37 USPQ2d 1237, 1239
(Fed. Cir. 1995)(citing W.L. Gore & Assocs., Inc. v. Garlock,
Inc., 721 F.2d 1540, 1551, 1553, 220 USPQ 303, 311, 312-13
(Fed. Cir. 1983)). “The mere fact that the prior art may be
modified in the manner suggested by the Examiner does not make
the modification obvious unless the prior art suggested the
desirability of the modification.” In re Fritch, 972 F.2d
1260, 1266, 23 USPQ2d 1780, 1784 (Fed. Cir. 1992) (citing In
re Gordon, 733 F.2d 900, 902, 221 USPQ 1125, 1127 (Fed. Cir.
1984)). “It is impermissible to use the claimed invention as
an instruction manual or ‘template’ to piece together the
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