Ex parte CHAMBON et al. - Page 8




              Appeal No.  1999-1367                                                                                        
              Application 08/453,998                                                                                       

              origin and a DNA-binding portion of yeast origin (page 6, lines 11-16).  Therefore, we read                  
              the scope of (i)(b) to mean variants which bind both the natural ligand and the natural                      
              response element.                                                                                            
                     Construction of part (i)(a) follows.  The response element is a natural ligand                        
              responsive element, or a variant which retains the function of a natural ligand responsive                   
              element.  If a variant, the variant must be a palindromic sequence or a repetition of a                      
              palindromic sequence, and the variant “retains the function of a natural ligand responsive                   
              element activating sequence in” a specified test.  Since a natural ligand responsive                         
              element functions by binding with the natural receptor, we read this part of the claim as                    
              meaning variants which bind the same receptor as the natural sequence.                                       
                     We note that the state of the art includes knowledge of methods to test for the                       
              functionality of variations from the sequence of a natural ligand responsive element. See                    
              for example the Martinez publication cited by the examiner.  Martinez also indicates that                    
              there was knowledge in the art of the responsive elements for a number of different                          
              steroids, recognition of the structure of a consensus sequence in the natural structure of                   
              glucocorticoid-responsive elements, and some knowledge of the sequence structure                             
              necessary for the specificity of the response element.  The examiner’s statement of the                      
              rejection is devoid of analysis of the state of the prior art.  Although the “variants” recited in           
              the claim are defined using functional language, there is nothing inherently wrong with                      
              functional language.  Persons of ordinary skill of the art had knowledge of the structure of                 

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