Ex parte WALKER - Page 7




          Appeal No. 1996-3433                                                        
          Application No. 08/198,955                                                  

          claims.  Since no prima facie case of obviousness has been                  
          established, we need not address the propriety of the evidence              
          of nonobviousness proffered by appellant, including the                     
          “expert opinion” affidavit of record.  See In re Piasecki, 745              
          F.2d 1468, 1472, 223 USPQ 785, 788 (Fed. Cir. 1984).                        





























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