Ex parte MITCHELL et al. - Page 7




          Appeal No. 95-2917                                                            
          Application 08/082,895                                                        


          of 35 U.S.C.                                                                  
          § 112, first paragraph.                                                       
               In regard to the 35 U.S.C. § 103 rejection, the Examiner                 
          has failed to set forth a prima facie case.  It is the burden                 
          of the Examiner to establish why one having ordinary skill in                 
          the art would have been led to the claimed invention by the                   
          express teachings or suggestions found in the prior art, or by                
          implica-tions contained in such teachings or suggestions.  In                 
          re Sernaker, 702 F.2d 989, 995, 217 USPQ 1, 6 (Fed. Cir.                      
          1983).  "Additionally, when determining obviousness, the                      
          claimed invention should be considered as a whole; there is no                
          legally recognizable 'heart' of the invention."  Para-Ordnance                
          Mfg. v. SGS Importers Int’l, Inc., 73 F.3d 1085, 1087, 37                     
          USPQ2d 1237, 1239 (Fed. Cir. 1995), cert. denied, 117 S.Ct. 80                
          (1996) citing                                                                 




          W. L. Gore & Assocs., Inc. v. Garlock, Inc., 721 F.2d 1540,                   
          1548, 220 USPQ 303, 309 (Fed. Cir. 1983), cert. denied, 469                   
          U.S. 851 (1984).                                                              

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