Ex Parte 5573648 et al - Page 24



            Appeal 2007-0128                                                                                  
            Reexamination Control 90/006,208                                                                  
            Patent 5,573,648                                                                                  
            Examiner cites Grot, Uchida and Vanderborgh as teaching the use of electrodes                     
            having Atwood=s claimed combination of proton conducting material and electron                    

            conducting materials.  (Id.).  The Examiner concludes that one of ordinary skill in               
            the art would have employed the electrodes of Grot and Uchida in Dempsey=s gas                    
            sensor because Grot and Uchida teach the use of their electrodes in gas sensors and               
            because Grot and Uchida=s electrodes provide Dempsey=s gas sensor with                            
            improved                                                                                          
            electrical properties.  (Id. at 5).  Further, the Examiner states that Vanderborgh’s              
            teaches that its electrode provides improved properties and that the substitution of              
            one known electrode composition for another, when the results are not unexpected,                 
            would have required only routine skill in the art.  (Id.).  Atwood disagrees.                     
            Atwood=s arguments are addressed below.                                                           

                         i. Analogous Art                                                                     
                   Atwood argues that Grot, Uchida and Vanderborgh represent non-analogous                    
                   art.  (Appeal Br., p. 23).  Atwood states that its claimed invention is a gas              
            sensor.                                                                                           
                   Atwood argues that:                                                                        
                   The fuel cell citations [Grot and Uchida] are not analogous to the                         
                   >648 Patent because they are neither in the field of ambient                               
                   atmosphere gas sensors nor reasonably pertinent to the problem                             
                   addressed by the >648 Patent, are inoperative in an ambient                                
                                                                                                             

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