Chiron regulatory update

The Japanese Patent Office refused to reject CHIR's published Japanese patent application (Kokoku No. 5-81600) covering hepatitis C virus antigens and immunoassays. The opponents included Kyokuto Seiyaku Kogyo Ltd., United Biochemical Inc., Tonen K.K., Kokusai Shiyaku K.K., Akzo N.V. and F. Hoffmann-La Roche AG. ...