Ex Parte AYERST et al - Page 3




          Appeal No. 2000-0272                                                        
          Application No. 08/922,715                                                  

               Claims 1, 3 through 5 and 9 through 13 stand rejected under            
          the judicially created doctrine of obviousness-type double                  
          patenting based upon claims 1 through 4 found in U.S. Patent No.            
          5,710,547.                                                                  
               Reference is made to the brief (paper number 5) and the                
          answer (paper number 6) for the respective positions of the                 
          appellants and the examiner.                                                
                                       OPINION                                        
               We have carefully considered the entire record before us,              
          and we will reverse the obviousness rejection of claims 1,                  
          3 through 5 and 9 through 13, and sustain the obviousness-type              
          double patenting rejection of claims 1, 3 through 5 and 9 through           
          13.                                                                         
               According to the examiner (answer, pages 4 and 5), “[t]he              
          applicant admits that in the prior art a typical pager                      
          transceiver sends a re-registration signal on a reverse channel             
          upon loosing [sic, losing] the forward channel,” and “[i]n an               
          analogous art, Balachandran teaches the use of a timer to ensure            
          that re-establishment occurs with sufficient frequency yet does             
          not interfere with the communication capacity.”  Based upon these           
          teachings, the examiner concludes (answer, page 5) that “it would           

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