Ex Parte HOFSTRAAT et al - Page 2




          Appeal No. 2004-0351                                                        
          Application No. 09/463,277                                                  


          comprising group.  Further details of this appealed subject                 
          matter are set forth in representative independent claim 1 which            
          reads as follows:                                                           
                    1.  A non-fluorescent label which is suitable for                 
               making a charge-transfer fluorescent probe having a donor-             
               bridge-acceptor structure, characterized in that the label             
               comprises a maleimide moiety and a donor-bridge-acceptor               
               structure, wherein the bridge is an 8-azabicyclo [3,2,1]               
               octane comprising group which leads to an all-trans orbital            
               coupling of the donor and the acceptor, and the donor-                 
               bridge-acceptor structure has a higher energy charge-                  
               transfer emissive state when [sic, than]1 at least one non-            
               emissive state of the part of the label comprising the                 
               maleimide moiety, which non-emissive state must have a                 
               higher energy that [sic, than]1 the charge-transfer emissive           
               state of the donor-bridge-acceptor structure after coupling            
               of the maleimide moiety to a suitable system.                          
               The references set forth below are relied upon by the                  
          examiner as evidence of obviousness:                                        
          Krijnen et al. (Krijnen), “Effect of Through-Bond Interaction on            
          Conformation and Structure of Some N-Arylpiperidone and N-                  
          Aryltropanone Derivatives,” J. A. Chem. Soc., 111(12), pp. 4433-            
          40 (1989).                                                                  
          Verhey et al. (Verhey), “A fluorogenic charge-transfer polarity             
          probe for the derivatization of thiols and amines,” New J. Chem.,           
          Vol. 20, pp. 809-14 (Jul. 8, 1996).                                         
               All of the claims on appeal stand rejected under 35 U.S.C.             
          § 103(a) as being unpatentable over Verhey in view of Krijnen.              


               1These informalities have inadvertently developed due to               
          typographical errors as revealed by a comparison of the original            
          and amended versions of appealed claim 1.                                   
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