Ex parte DENNIS et al. - Page 6




          Appeal No. 1997-0123                                                        
          Application 08/368,926                                                      


          modify the prior art or to combine 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 Hospital Systems, Inc. v.                 
          Montefiore Hospital, 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                                                                          


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