This work first published in the Ottoman Empire is now in the public domain because the Empire's copyright formalities were not met (copyright notice, registration, and deposit), or because the copyright term (30 years after the death of the author, sometimes less) expired before the Empire was dissolved (details).
The protection period continues during the lifetime of the author of the work and for 70 years after his death.
For works published after the death of their author, the protection period is 70 years after the date of death.
In cases stated in the first paragraph of Article 12, the protection period is 70 years from the date that the work is published, unless the author of the work discloses his name before the expiry of this period.
In case the author of the work is a legal person, the protection period is 70 years from the date that the work is published.