This blogger must confess that, while he enjoys the sensation of having all the law at his fingertips and often in his brain, there are times when he quite forgets all about Article 18 of the Berne Convention. In case you have forgotten all about it too, here it is:
Article 18
Works Existing on Convention's Entry Into Force:
1. Protectable where protection not yet expired in country of origin;
2. Non-protectable where protection already expired in country where it is claimed;
3. Application of these principles; 4. Special cases
(1) This Convention shall apply to all works which, at the moment of its coming into force, have not yet fallen into the public domain in the country of origin through the expiry of the term of protection.
(2) If, however, through the expiry of the term of protection which was previously granted, a work has fallen into the public domain of the country where protection is claimed, that work shall not be protected anew.
(3) The application of this principle shall be subject to any provisions contained in special conventions to that effect existing or to be concluded between countries of the Union. In the absence of such provisions, the respective countries shall determine, each in so far as it is concerned, the conditions of application of this principle.
(4) The preceding provisions shall also apply in the case of new accessions to the Union and to cases in which protection is extended by the application of Article 7 or by the abandonment of reservations.
This has all suddenly become quite topical after WIPO released Berne Notification No. 261 (better known as "Berne Convention for the Protection of Literary and Artistic Works
Notification by the Republic of Uzbekistan: Withdrawal of Declaration Concerning Article 18 of the Paris Act (1971)"). Back in 2005, when Uzbekistan deposited its instrument of accession to the Berne Convention, it also made a declaration according to which the effects of that Convention would not extend to works which, at the date of entry into force of the Convention in Uzbekistan, were already in the public domain there.
However, on 8 January of this year, that declaration was withdrawn.