本作品作者於1970年逝世，在其來源國以及其他著作權期限是作者逝世後50年或以下的國家與地區屬於公有領域。

這個作品在美利堅合眾國屬於公有領域，因為它首次發布早於1929年1月1日，或於該日期之前在美國著作權局登記。

This is because in July 2006, a Japanese court ruled that all films produced in Japan prior to 1953 were exempt from a change of copyright law changing the term for cinematographic works from 50 years after publication to 70 years. [1][2][3].

However, the Tokyo District Court ruled on 17 September 2007 that films by Akira Kurosawa (died 1998) remain copyrighted until 2036, ruling that an older pre-1971 law applies. That old law kept copyright protection for 38 years after the creator's death.

In 2008, the Intellectual Property High Court affirmed the lower court's decision. The report states the "Japanese Intellectual Property High Court ruling that establishes the Tokyo District Court's September 2007 decision to be correct," and that "the preceding judge Nobuyoshi Tanaka is quoted as stressing that 'the copyright over films is protected for 38 years from the year after the death of the director.'"

Please note that public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. The file must have an additional copyright tag indicating the copyright status in the United States. See also Copyright rules by territory.

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