Ex Parte SIEGL et al - Page 5




          Appeal No. 2002-0585                                                        
          Application No. 09/088,307                                                  


          specification is truly enabling, In re Marzocchi, 439 F.2d 220,             
          169 USPQ 367 (CCPA 1971); In re Sichert, 566 F.2d 1154, 196 USPQ            
          209 (CCPA 1977).                                                            
               Moreover, if an examiner had a reasonable basis for                    
          questioning the sufficiency of the disclosure, it was incumbent             
          on appellants to come forward with evidence, if they could, to              
          rebut the examiner’s position.  In re Buchner, 929 F.2d 660, 18             
          USPQ2d 1331 (Fed. Cir. 1991).                                               
               In the instant case, the teaching by the specification,                
          e.g., pages 22-24, regarding parameters k and kbasis, clearly               
          corresponds in scope with the claimed parameters.  Appellants               
          have explained, convincingly in our view, that these parameters             
          are merely coefficients corresponding to the proportional,                  
          derivative and integral factors in the well known equation                  
          describing the operation of a PID controller.  As further                   
          explained by appellants, e.g., pages 2-4 of the reply brief,                
          these factors are chosen in order to have the particular system             
          operate properly, the actual determination of specific values               
          constituting the well-known “tuning” of a PID controller, and,              
          since each system is different, it would be useless to provide              
          specific values for these parameters.                                       


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