Ex parte LEONHARDT et al. - Page 5




          Appeal No. 1998-2914                                                        
          Application 08/510,971                                                      

          burden of producing reasons that substantiate a rejection                   
          based on lack of enablement.  In re Strahilevitz, 668 F.2d                  
          1229, 1232,  212 USPQ 561, 563 (CCPA 1982) and In re                        
          Marzocchi, 439 F.2d 220, 224 169 USPQ 367, 370 (CCPA 1971).                 
          Once this is done, the burden shifts to the appellants to                   
          rebut this conclusion by presenting evidence to prove that the              
          disclosure is enabling.  In re Doyle, 482 F.2d 1385, 1392, 179              
          USPQ 227, 232 (CCPA 1973), cert. denied, 416 U.S. 935 (1974)                
          and In re Eynde, 480 F.2d 1364, 1370,                                       
          178 USPQ 470, 474 (CCPA 1973).                                              
               Here, we have carefully reviewed the appellants'                       
          disclosure in light of the examiner's contentions, but do not               
          find that the examiner has satisfied the initial burden of                  
          producing a convincing line of reasoning which would                        
          substantiate a rejection based on lack of enablement with                   
          respect to the subject matter defined by the claims on appeal.              
          It is, of course, true that every detail has not been set                   
          forth in the specification.  However, as the court in In re                 
          Gaubert, 524 F.2d 1222, 1226,                                               
          187 USPQ 664, 667 (CCPA 1975) set forth in quoting from Martin              
          v. Johnson, 454 F.2d 746, 751, 172 USPQ 391, 395 (CCPA 1972):               
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