VISSER et al v. HOFVANDER et al - Page 116




          Interference 103,579                                                        
          sequence coding for PGBSS in the antisense direction would be               
          effective to inhibit expression of the GBSS gene in potato plants           
          based on success using a fragment of the full length cDNA or                
          genomic DNA sequence coding for PGBSS in the antisense direction.           
          Nor does Hofvander point to any evidence in this record which               
          reasonably suggests that persons having ordinary skill in the art           
          the time Hofvander invented the subject matter defined by its               
          claims designated as corresponding to the count reasonably would            
          or could have relied on the homologous sequence theory to predict           
          that some fragment of a full length cDNA or genomic DNA sequence            
          coding for PGBSS in the antisense direction would be effective to           
          inhibit expression of the GBSS gene in potato plants based on               
          success using a full length cDNA or genomic DNA sequence coding             
          for PGBSS in the antisense direction to inhibit expression of the           
          GBSS gene in potato plants.                                                 
               Even if we presume that sequence homology is one factor                
          which persons having ordinary skill in the art unquestionably               
          would have considered in their efforts to successfully apply                
          antisense technology to inhibit GBSS gene expression in potato              
          plants, the evidence shows that sequence homology is but one of             
          many factors which influence success.  Kuipers’ 1995 publication            
          indicates that persons having ordinary skill in the art                     
          reasonably could not have predicted which DNA sequences in the              
          antisense direction would successfully inhibit PGBSS gene                   
                                        -116-                                         





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