Ex parte RATZEL et al. - Page 16




          Appeal No. 97-3703                                        Page 16           
          Application No. 08/110,349                                                  


          20 for motion therewith) to achieve the above-noted advantages              
          would have been obvious.                                                    
               While the alignment member disclosed by the appellants'                
          admitted prior art is mounted to the frame so as to pivot into              
          and out of alignment with the bottom of the outlet opening and              
          thus does not move rectilinearly as claimed, whether the                    
          alignment member is mounted in the Walker machine so as to                  
          travel in a curvilinear path about a fixed pivot point or in a              
          rectilinear path into and out of alignment with the outlet                  
          opening is considered to be an obvious matter of design                     
          choice.  One of ordinary skill in the art would have                        
          understood that the particular path traveled by the alignment               
          member is immaterial, as long as the alignment member is                    
          aligned with the outlet opening in its upper-most position                  
          and, further, would have                                                    
          understood how to mount the alignment member for travel in any              
          desired path.  Where a change solves no stated problem, it is               
          considered to be a mere matter of design choice and therefore               
          obvious.  In re Kuhle, 526 F.2d 553, 555, 188 USPQ 7, 9 (CCPA               
          1975).                                                                      
                               REMAND TO THE EXAMINER                                 







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