It is an anonymous work or pseudonymous work and 50 years (before 1 January 1974) have passed since the date of its publication
It is a work created on payment of remuneration at the initiation or direction of any person or organization and 50 years (before 1 January 1974) have passed since the date of its publication
It is a photographic work or work of applied art and 25 years have passed since the year the work was created (ie. as of 2024, works published prior to 1 January 1999 are considered public domain).
It is another kind of work, and 50 years (before 1 January 1974) have passed since the year of death of the author (or last-surviving author)
It is a "court judgement or administrative decision"
