Ex parte PLUMTON et al. - Page 4




          Appeal No. 95-0347                                                          
          Application 08/056,681                                                      


          Oil Co., 814 F.2d 628, 631, 2 USPQ2d 1051, 1053 (Fed. Cir.),                
          cert. denied, 484 U.S. 827 (1987).                                          



               Moreover, the examiner has the initial burden of                       
          establishing prima facie anticipation by coming forward with                
          evidence tending to disprove novelty.  In re Wilder, 429 F.2d               
          447, 450, 166 USPQ 545, 548 (CCPA 1970).  A prima facie case                
          means the evidence of prior art would reasonably allow the                  
          conclusion the examiner seeks and compels such a conclusion if              
          the applicant produces no evidence or argument to rebut it.  In             
          re Spada, 911 F.2d at 707 n.3, 15 USPQ2d at 1657 n.3 (Fed. Cir.             
          1990).                                                                      
               We agree with the appellants that the examiner has not                 
          established prima facie anticipation.                                       
               The claims recite a field effect transistor, not a                     
          thyristor.  A thyristor is a semiconductor device having at least           
          three junctions (The New IEEE Standard Dictionary of Electrical             
          and Electronic Terms, Fifth Ed., 1993, at page 1372 / page                  
          attached),  and should not be confused with a field effect                  
          transistor (Semiconductor Devices, Heathkit-Zenith Educational              
          Systems, 1978, at page 8-3 / page attached).  The examiner does             

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