OATES V. RIVETTI et al. - Page 11




          Interference No. 102,622                                                    

          on July 30, 1985; and, that such active exercise began in the               
          United States (see paragraph (6) of Paper Number 9).                        
                    The facts concerning Oates' conception are not                    
          disputed by the parties.  In 1987, at a time when Ms. Oates                 
          worked for PPG in their laboratory in Barberton, Ohio, Ms.                  
          Oates filed with the PPG patent department a memorandum of                  
          invention (MOI) on December 2, 1987, directed to the                        
          preparation of high refractive index optical plastic from                   
          bisphenol AP (OR p.37-42; OX-3).  The MOI was witnessed by                  
          Paul A. Adair on December 2, 1987 (OR p.41) and receipt of the              
          MOI was acknowledged by Mr. Stein in a letter to Ms. Oates                  
          dated December 15, 1987 (OR p.43-44; OX-4).  Stein has                      
          testified that he remembers having his secretary prepare the                
          December 15, 1987, letter to Ms. Oates acknowledging receipt                
          of the MOI by the patent department from the information                    
          contained in the MOI using a PPG form (OX-12) specifically                  
          designated for that purpose (OR p.161-170).                                 
                    The MOI states that the invention was first                       
          described in writing in "Notebook 6748 7-31-85".  Notebook                  
          6748 is Ms. Oates' notebook (OX-1) and it included an account               
          of her work from July 18, 1985, through June 2, 1986.  On                   
          pages 8 and 9 of notebook 6748 there is described an                        
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