Federal Act on Copyright and Related Rights
(Copyright Act, CopA)

¹ Where the own­er of an ori­gin­al work of which no fur­ther cop­ies ex­ist has reas­on to as­sume that the au­thor of the work has a le­git­im­ate in­terest in its pre­ser­va­tion, he may not des­troy the work without first of­fer­ing to re­turn it to the au­thor. The own­er may not re­quest more than the ma­ter­i­al value of the work.

² Where it is not pos­sible to re­turn the work, the own­er must make it pos­sible for the au­thor to re­pro­duce the ori­gin­al in an ap­pro­pri­ate man­ner.

³ For works of ar­chi­tec­ture, the au­thor only has the right to pho­to­graph the work and to re­quire that cop­ies of the plans be handed to him at his own ex­pense.