Ex parte SPRUNK - Page 6




          Appeal No. 2000-1330                                                        
          Application No. 08/972,835                                                  


          one-way function.  Therefore, we fail to find that Elander                  
          teaches or suggest Appellant's claimed method recited in                    
          Appellant's claim 1 or a key distributor recited in                         
          Appellant's claim 14, lines 8 through 17.  Furthermore, upon                
          our review of Schneier, we fail to find that Schneier closes                
          the gap.                                                                    
               The Federal Circuit states that "[t]he mere fact that the              
          prior art may be modified in the manner suggested by the                    
          Examiner does not make the modification obvious unless the                  
          prior art suggested the desirability of the modification."  In              
          re Fritch, 972 F.2d 1260, 1266 n.14, 23 USPQ2d 1780, 1783-84                
          n.14 (Fed. Cir. 1992), citing In re Gordon, 733 F.2d 900, 902,              
          221 USPQ 1125, 1127 (Fed. Cir. 1984).  It is further                        
          established that "[s]uch a suggestion may come from the nature              
          of the problem to be solved, leading inventors to look to                   
          references relating to  possible solutions to that problem."                
          Pro-Mold & Tool Co. v. Great Lakes Plastics, Inc., 75 F.3d                  
          1568, 1573, 37 USPQ2d 1626, 1630 (Fed. Cir. 1996), citing In                
          re Rinehart, 531 F.2d 1048, 1054, 189 USPQ 143, 149 CCPA 1976)              
          (considering the problem to be solved in a determination of                 

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