From BBC News :
Japan court rejects germ warfare case

A Japanese court has rejected claims for compensation brought by 180 Chinese people who claim they were victims of Japan's biological warfare unit in China in the 1940s.
But the three judges did acknowledge the facts of the case, the first time a Japanese court has admitted Japan conducted biological warfare during World War II.
They can deny so blatant facts forever. At least there is a move towards acception of war crimes. The victims (those still alive) will be dead before they will be able to get any compensation though.