Ex Parte COOK et al - Page 4


                 Appeal No. 2001-2643                                                         Page 4                    
                 Application No. 08/117,363                                                                             

                        claimed invention.  Furthermore, Ca[r]rico discloses . . . the non-                             
                        critical nature of the various 5’ substitutions used for tethering                              
                        labels to a nucleic acid.  Ca[r]rico discloses, for example at col. 7,                          
                        lines 15 and 22, that R1 is a “bond or a chain.”                                                
                 Examiner’s Answer, pages 3-4.                                                                          
                        Appellants argue that the “Examiner has not identified any reason” why a                        
                 person of ordinary skill would have been motivated to modify the cited references                      
                 as proposed.  See the Appeal Brief, page 4.  Appellants argue that both Latham                         
                 and Matteucci propose one group of moieties as being appropriate for terminal                          
                 linkage to the 2’ position and an entirely different group as appropriate for                          
                 internucleotide (3’ or 5’) linkages.  Appeal Brief, page 5.  Thus, Appellants argue,                   
                 a person of ordinary skill in the art                                                                  
                        would not have been motivated to modify the teachings of the prior                              
                        art in the manner proposed by the Examiner.  There is simply no                                 
                        reason why a person of ordinary skill would have been motivated to                              
                        take one of the non-terminal, 3’-5’ internucleoside linkages                                    
                        disclosed by the Matteucci reference (such a linkage being                                      
                        covalently bound at both of its ends) and then attach it in a terminal                          
                        manner at the 2’-position (so as to be covalently bound at only one                             
                        end).                                                                                           
                 Id.                                                                                                    
                        “In rejecting claims under 35 U.S.C. § 103, the examiner bears the initial                      
                 burden of presenting a prima facie case of obviousness.  Only if that burden is                        
                 met, does the burden of coming forward with evidence or argument shift to the                          
                 applicant.”  In re Rijckaert, 9 F.3d 1531, 1532, 28 USPQ2d 1955, 1956 (Fed. Cir.                       
                 1993).  “Where claimed subject matter has been rejected as obvious in view of a                        
                 combination of prior art references, a proper analysis under § 103 requires, inter                     
                 alia, consideration of two factors:  (1) whether the prior art would have suggested                    





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