Interference No. 103,906 a method for treating a viral infection in a mammal comprising administering to a mammal in need thereof, an antiviral effective amount of a mixture of (-)-Cis-4-amino-5-fluoro-1-(2- hydroxymethyl-1,3-oxathiolan-5yl)-(1H)-pyrimidin-2-one or a pharmaceutically acceptable salt, ester or salt of an ester thereof, and (+)-Cis-4-amino-5-fluoro-1-(2-hydroxymethyl-1,3- oxathiolan-5yl)-(1H)-pyrimidin-2-one or a pharmaceutically acceptable salt, ester or salt of an ester thereof, wherein the (+)-enantiomer is present in an amount of no more than 5% w/w. The claims of the parties which correspond to the count are: Dionne: Claims 1-4. Liotta et al.: Claims 26, 27, 31-40, 43, 44, 47 and 48. A2Page: Previous 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22Last modified: November 3, 2007