Ex parte D'AMORE et al. - Page 9




          Appeal No. 2000-0003                                       Page 9           
          Application No. 08/618,814                                                  


          show a region of the peripheral wall which remains at the                   
          original diameter while the peripheral wall above that region               
          is reduced in diameter is, in our view, pure speculation.  It               
          is well-settled that under principles of inherency, when a                  
          reference is silent about an asserted inherent characteristic,              
          it must be clear that the missing descriptive matter is                     
          necessarily present in the thing described in the reference,                
          and that it would be so recognized by persons of ordinary                   
          skill.  Continental Can Co. v. Monsanto Co., 948 F.2d 1264,                 
          1268, 20 USPQ2d 1746, 1749 (Fed. Cir. 1991).  As the court                  
          stated in In re Oelrich, 666 F.2d 578, 581, 212 USPQ 323, 326               
          (CCPA 1981)(quoting Hansgirg v. Kemmer, 102 F.2d 212, 214, 40               
          USPQ 665, 667 (CCPA 1939)):                                                 
               Inherency, however, may not be established by                          
               probabilities or possibilities.  The mere fact that                    
               a certain thing may result from a given set of                         
               circumstances is not sufficient. [Citations                            
               omitted.]  If, however, the disclosure is sufficient                   
               to show that the natural result flowing from the                       
               operation as taught would result in the performance                    
               of the questioned function, it seems to be well                        
               settled that the disclosure should be regarded as                      
               sufficient.                                                            

          In this case, it is our opinion that the examiner's position                
          is based upon shear speculation.  Furthermore, it is our view               







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