Japan's Nikkei 225 was set to open higher after U.S. President Donald Trump formalized a lower tariff on Japanese auto imports at 15%.

This comes after a U.S. federal appeals court on Friday ruled that most of President Donald Trump's global tariffs are illegal.

Japan's Nikkei 225 was set to open higher after U.S. President Donald Trump formalized a lower tariff on Japanese auto imports at 15%.