Commentaries: Art. 31

Where the author of a work is unknown, protection for that work expires 70 years after it has been published or, if it has been published in instalments, 70 years after the final instalment.
If the identity of the person¹who has created the work becomes publicly known before the expiry of the aforementioned term, protection for the work expires:
1. in the case of computer programs, 50 years after the death of the author²;
2. in the case of all other works, 70 years after the death of the author³.

Revised by the Federal Assembly Drafting Committee (Art. 58 para. 1 ParlA;SR 171.10 ) . ↩
Revised by the Federal Assembly Drafting Committee (Art. 58 para. 1 ParlA;SR 171.10 ) . ↩
Revised by the Federal Assembly Drafting Committee (Art. 58 para. 1 ParlA;SR 171.10 ) . ↩

Art. 31