Ex parte PFEUFFER et al. - Page 7

          Appeal No. 1999-0960                                                        
          Application No. 08/785,437                                                  

                                             protecting the                           
                                             delicate folds                           
                                             of the pleats.                           
               "Even when obviousness is based on a single prior art                  
          reference, there must be a showing of a suggestion or                       
          motivation to modify the teachings of that reference."  In re               
          Kotzab, 217 F.3d 1365, 1370, 55 USPQ2d 1313, 1316-17 (Fed.                  
          Cir. 2000).  In the present case, we do not consider that such              
          a showing has been made.  As mentioned above, Wright discloses              
          that the purpose of screens 2 and 3 is to prevent distortion                
          of the filter and maintain uniform spacing between the fold                 
          backs.  There would have been no motivation or suggestion for               
          one of ordinary skill to modify the Wright filter, as proposed              
          by the examiner, by aligning the screen wires along the fold                
          backs in order to protect the fold backs, because in Wright                 
          that function is already performed by the capping 6, nor is                 
          there any indication that additional strengthening would be                 
               Accordingly, the rejection of claims 1 and 13, and                     
          likewise of claims 2 to 12, 14 and 15 dependent thereon, will               
          not be sustained.                                                           


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