Ex Parte PLOUET et al - Page 4




                 Appeal No. 2004-0291                                                                                                              
                 Application No. 09/091,561                                                                                                        
                         As evidence of enablement, the appellants put forth four declarations.                                                    
                         The first Declaration is that of Jean Plouet dated 9/11/2000, and states that of the                                      
                 four anti-idiotype monoclonal antibodies of the same isotype isolated, only one, A9,                                              
                 binds to flk-1 but not flt-1.  Declaration, page 6.                                                                               
                         Another Declaration, that of Dr. Cazenave, stated that the “screening procedure                                           
                 of the application has been established as an assay measuring the inhibition of                                                   
                 recombinant human VEGF toward recombinant human VEGFR2 by immunoglobulin.”                                                        
                 Cazenave Declaration, page 1.                                                                                                     
                         Dr. Cazenave further states that “an analysis of the specificity of mice antibodies                                       
                 by Radio Receptor Assay would involve only routine experimentation to identify anti-Id                                            
                 immunoglobulin corresponding to the Ig2 J fraction of the present specification.”  Id.                                            
                         The second Declaration of Jean Plouet is dated 3/19/2002.  In this Declaration,                                           
                 the inventor Plouet confirms data submitted with the Declaration of Dr. Cazenave, and                                             
                 states that                                                                                                                       
                         given the showing in the specification that about 15 to 20% of rabbits                                                    
                         produce the anti-idiotypic antibody having the claimed binding specificity, a                                             
                         person skilled in the field of anti-idiotypic science would have at least a                                               
                         “reasonable expectation” that a comparable percentage of mice would                                                       
                         produce an anti-idiotypic antibody having that binding specificity...                                                     
                                  I also confirm that given the screening methods described in the                                                 
                         present specification, an analysis of the specificity of mice antibodies by                                               
                         Radio Receptor Assay would involve only routine experimentation to                                                        
                         isolate and identify anti-id immunoglobulin corresponding to the Ig2 J                                                    
                         fraction of the present specification.  It is only a matter of routine                                                    
                         experimentation to produce monoclonal antibodies from the candidate B-                                                    
                         lymphocytes and to identify those having the claimed specificity.                                                         

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