Ex parte DRESCHER - Page 7




          Appeal No. 1997-2990                                                        
          Application 08/260,318                                                      


          prior art references to arrive at the claimed invention.  Such              
          reason must stem from some teaching, suggestion or implication              
          in the prior art as a whole or knowledge generally available                
          to one having ordinary skill in the art.  Uniroyal, Inc. v.                 
          Rudkin-Wiley Corp., 837 F.2d 1044, 1051, 5 USPQ2d 1434, 1438                
          (Fed. Cir.), cert. denied, 488 U.S. 825 (1988); Ashland Oil,                
          Inc. v. Delta Resins & Refractories, Inc., 776 F.2d 281, 293,               
          227 USPQ 657, 664 (Fed. Cir. 1985), cert. denied, 475 U.S.                  
          1017 (1986); ACS Hosp. Sys., Inc. v. Montefiore Hosp., 732                  
          F.2d 1572, 1577, 221 USPQ 929, 933 (Fed. Cir. 1984).  These                 
          showings by the examiner are an essential part of complying                 
          with the burden of presenting a prima facie case of                         
          obviousness.  Note In re Oetiker, 977 F.2d 1443, 1445, 24                   
          USPQ2d 1443, 1444 (Fed. Cir. 1992).  If that burden is met,                 
          the burden then shifts to the applicant to overcome the prima               
          facie case with argument and/or evidence.  Obviousness is then              
          determined on the basis of the evidence as a whole and the                  
          relative persuasiveness of the arguments.  See Id.; In re                   
          Hedges, 783 F.2d 1038, 1039, 228 USPQ 685, 686 (Fed. Cir.                   
          1986); In re Piasecki, 745 F.2d 1468, 1472, 223 USPQ 785, 788               
          (Fed. Cir. 1984); and In re Rinehart, 531 F.2d 1048, 1052, 189              
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