Ex parte WALLACH et al. - Page 10



              Appeal No. 1999-0197                                                                                        
              Application 08/054,970                                                                                      

                     Absent a fact-based explanation from the examiner why the experimentation                            
              required to practice the methods set forth in the use claims on appeal would be undue                       
              rather than routine, we conclude that the examiner has not established a prima facie case                   
              of lack of enablement.                                                                                      
                     The examiner’s rejection is reversed.                                                                
                                                      Other Issues                                                        
              1.  p75-TNF-R.                                                                                              
                     As explained above, the present invention involves two distinct tumor necrosis                       
              factor receptors, i.e., p55–TNF-R and p75-TNF-R.  The vast majority of the disclosure in                    
              this application is directed to the p55 receptor.  The most illuminating discussion of the                  
              p75 receptor in the specification appears at page 29 where appellants state:                                
                     Although reference is made throughout to the p55-TNF-R, it is evident from                           
                     what is known of the p75-TNF-R, that it functions similarly.  Therefore the                          
                     present invention encompasses modulation of the signal transduction and/or                           
                     cleavage in both known TNF receptors.                                                                
              Some of the claims on appeal contain an embodiment directed to the p75-TNF-R.  For                          
              example, claim 34 first references a molecule which binds to the portion of TNF-R which                     
              includes certain amino acids of human p55-TNF-R or “the corresponding amino acids of                        
              the human p75-TNF-R.”  It does not appear from the record that the examiner has paid                        
              attention to this alternative embodiment.                                                                   
                     Upon return of the application, the examiner should review all of the claims pending                 
              and ensure that the subject matter of each claim has been fully examined.  For example,                     


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