DIONNE et al v. LIOTTA et al - Page 21




          Interference No. 103,906                                                      


                                       Appendix                                         

          Count 1                                                                       
          A method for treating HIV infection in humans comprising                      
          administering an effective amount of (-)-$-L-2-hydroxymethyl-5-               
          (5-fluorocytosin-1-yl)-1,3-oxanthiolane, or its physiologically               
          acceptable salt, optionally in a pharmaceutically acceptable                  
          carrier;                                                                      
                                          or                                            
          a method for treating a viral infection in a mammal comprising                
          administering to a mammal in need thereof, an antiviral effective             
          amount of (-)-Cis-4-amino-5-fluoro-1-(2-hydroxymethyl-1,3-                    
          oxanthiolan-5yl)-(1H)-pyrimidin-2-one or a pharmaceutically                   
          acceptable salt, ester or salt of an ester thereof.                           
               The claims of the parties which correspond to the count are:             
          Dionne: Claim 1.                                                              
          Liotta et al.: Claims 26, 31-34, 39, 43 and 47.                               

          Count 2                                                                       
          A method for treating HIV infection in humans comprising                      
          administering an effective amount of (-)-$-L-2-hydroxymethyl-5-               
          (5-fluorocytosin-1,3-oxathiolane, or its physiologically                      
          acceptable salt, optionally in a pharmaceutically acceptable                  
          carrier;                                                                      
                                          or                                            

          a method for treating HIV infection in humans comprising                      
          administering an effective amount of (+)-$-D-2-hydroxymethyl-                 
          5(5-fluorocytosin-1-yl)-1,3-oxathiolane, or its physiologically               
          acceptable salt, optionally in a pharmaceutically acceptable                  
          carrier;                                                                      
                                          or                                            

                                          A1                                            





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