FedEx Corp. has filed a lawsuit against the U.S. government seeking a full refund of the money the shipper paid due to President Donald Trump’s tariffs.

The lawsuit was filed with the U.S. Court of International Trade in New York. It comes days after the Supreme Court ruled Trump’s tariffs issued under the International Emergency Economic Powers Act (IEEPA) are unlawful. Following the decision, Trump imposed 15% global tariffs using Section 122 of the 1974 Trade Act. That duty will expire after 150 days unless Congress extends it. 

FedEx said on its website that it is “committed to helping our customers navigate the regulatory environment.”

“While the Supreme Court did not address the issue of refunds, FedEx has taken necessary action to protect the company’s rights as an importer of record to seek duty refunds from U.S. Customs and Border Protection,” the company said.

FedEx’s suit appears to be the first filed by a major U.S. company seeking a refund since the Supreme Court decision. Several other companies previously filed lawsuits seeking refunds before the high court’s decision. 

“We will communicate any relevant information and updates in a timely manner, and we appreciate your patience as we wait for additional guidance and clarity from the U.S. government and the courts,” FedEx wrote to customers.

FedEx did not specify an exact amount for the refunds it is seeking.

Separately, Senate Democrats are unveiling a bill that would require the Customs and Border Protection to issue refunds within 180 days and pay interest. The bill would prioritize small businesses and urge larger companies to pass refunds along to customers.