VISSER et al v. HOFVANDER et al - Page 117




          Interference 103,579                                                        
          expression based solely on their sequence homology to one or more           
          other DNA sequences which successfully inhibited PGBSS gene                 
          expression in the antisense direction.                                      
               The Kuipers’ 1995 publication provides substantial evidence            
          that the art to which the parties’ claims designated as                     
          corresponding to the count pertain is influenced by many                    
          unforeseeable factors.  Kuipers’ 1995 publication not only                  
          establishes that the pertinent art was highly unpredictable in              
          the 1990-1992 time frame, but it also was unpredictable                     
          thereafter.  Visser’s involved application teaches that Visser’s            
          constructs comprising a promoter and full length genomic DNA                
          coding for PGBSS in the antisense direction will inhibit GBSS               
          gene expression in potato plants to the same or substantially the           
          same extent that Hofvander’s involved application teaches that              
          Hofvander’s constructs comprising the same promoter and SEQ ID              
          No. 3 in the antisense direction, a fragment of Visser’s full               
          length genomic DNA coding for PGBSS in the antisense direction              
          will inhibit GBSS gene expression in potato plants.  Kuipers                
          1995 publication thereafter showed that constructs comprising               
          either full length genomic DNA coding for PGBSS or a SstI-SpeI              
          fragment thereof in the antisense direction inhibits PGBSS gene             
          expression.  Nevertheless, the later results described in                   
          Kuipers’ 1995 publication shows that sequence homology alone                
          cannot reasonably be relied upon as an indicator of success using           
                                        -117-                                         





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