Ex Parte DERLETH et al - Page 9




          Appeal No. 1999-0663                                                        
          Application 08/624,047                                                      


               Claim 2: A comparison of Scott’s preferred amounts of                  
          copper, magnesium and potassium, per kilo of catalytic                      
          composition (page 2, lines 47-49), versus those in the                      
          appellants’ claim 2, is as follows:                                         
               Scott           Appellants                                             
                    Cu             30-90              40-80                           
                   Mg              2-30              12-25                           
                   K               2-30             0.5-9                            
          This overlap would have rendered the appellants’ claimed catalyst           
          prima facie obvious to one of ordinary skill in the art over                
          Scott.  See Malagari, 499 F.2d at 1303, 182 USPQ at 553.                    
               Claims 4 and 5: A comparison of Scott’s preferred K/Cu and             
          K/Mg atomic ratios (page 2, lines 50-51) versus those in the                
          appellants’ claims 4 (K/Cu) and 5 (K/Mg) is as follows:                     
          Scott           Appellants                                                  
          K/Cu           0.1-1           0.025-0.25                                   
          K/Mg           0.1-10           0.01-0.8                                    
          These overlaps would have rendered the appellants’ claimed                  
          catalyst prima facie obvious to one of ordinary skill in the art            
          over Scott.  See Malagari, 499 F.2d at 1303, 182 USPQ at 553.               
               Claim 6: A comparison of Scott’s preferred Cu:Mg:K atomic              
          ratio (page 2, lines 50-51) versus that in the appellants’                  
          claim 6 is as follows:                                                      

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