The National Gallery of Art in London can keep a Matisse portrait allegedly stolen from the distant relatives of the subject of the painting itself, the U.S. Court of Appeals for the Second Circuit ordered in a summary judgment Monday.

The panel of Circuit Judges Barrington Parker, Peter Hall and Raymond Lohier Jr. ruled that the plaintiffs, the heirs of Matisse muse Margarete Moll, failed to satisfy the requirements of the expropriation exception under the Foreign Sovereign Immunities Act.