Ex Parte Yang et al - Page 8




                Appeal No. 2005-0116                                                                                                       
                Application No. 10/109,390                                                                                                 

                establish a genuine issue of material fact."  Dembiczak, 175 F.3d at 999, 50 USPQ2d                                        
                at 1617, citing McElmurry v. Arkansas Power & Light Co., 995 F.2d 1576, 1578, 27                                           
                USPQ2d 1129, 1131 (Fed. Cir. 1993).                                                                                        
                        The examiner relies upon the teachings of Merrill to teach the additional limitation                               
                in claim 3 with respect to the use of a buffer at the output of the circuit.  The examiner                                 
                relies upon the teachings of Gowda to teach the additional limitation in claims  4 and 5                                   
                with respect to the use of the second reference signal a subsequent first reference                                        
                signal.  Appellants do not contest the teachings of Merrill or Gowda, but maintain that                                    
                they do not remedy the deficiencies in Fossum as noted above.  We agree with                                               
                appellants and find that the examiner has not established a prima facie       case of                                      
                obviousness of the claimed invention.                                                                                      
                        With respect to independent claim 6, the examiner relies upon the teachings of                                     
                Dhuse in combination with Booth, Jr. as evidence of obviousness of the detailed limita-                                    
                tions of independent claim 6.  From our review of the teachings of Dhuse, we agree with                                    
                appellants’ (Brief at pages 6-7) that Dhuse is deficient with respect to the second black                                  
                reference signal branch and that the teachings of Booth, Jr. do not fairly suggest the use                                 
                of  separate and distinct branch circuits for the same pixel and use thereof for black                                     
                reference signals to modify the pixel signal.  Therefore, we find that the examiner has                                    
                not established a prima facie case of obviousness of the invention as recited in                                           




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