At least nine Japanese companies, including Toyota Tsusho and Sumitomo Chemical, have filed lawsuits with the U.S. International Trade Court seeking refunds on tariffs they paid under the Trump administration’s high tariff policies.

The lawsuits are strategically timed to coincide with ongoing proceedings at the U.S. Supreme Court, which is currently reviewing the legality of certain trade measures, including "reciprocal tariffs" and other tariffs imposed under U.S. President Donald Trump’s trade agenda.