KIPOURAS et al. V. BARNHOUSE et al. - Page 23




          Interference No. 103,029                                                    



          Pat. Int. 1984)(Motion to amend preliminary statement granted               
          based on evidence of the counsel's care in following                        
          interference rules by conforming original preliminary                       
          statement to proofs for each count).                                        
                    In this instance, the first motion to permit the                  
          amendment seeks to have the preliminary statement of the                    
          senior party amended to include the allegation of derivation                
          by the junior party from the senior party.  As we understand                
          the relevant time frame, the senior party testimony period                  
          began on November 1, 1993 and was set to conclude on January                
          1, 1994.  The motion to amend the preliminary statement was                 
          made for the first time on December 23, 1993, toward the end                
          of the senior party’s testimony period and after inventors Yu               
          and Barnhouse had been deposed on September 13 and 28, 1993,                
          respectively.  Thus, the                                                    


          junior party’s argument that the request comes extremely late               
          in the proceedings has some merit.  We would be inclined to                 
          deny the motion based merely on the lateness thereof.                       
                    However, the senior party points to several                       
          circumstances, that even with the exercise of due care, would               
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