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

¹ Where two or more per­sons have con­trib­uted as au­thors to the cre­ation of a work, copy­right be­longs to all such per­sons jointly.

² Un­less they have agreed oth­er­wise, they may only use the work with the con­sent of all au­thors; con­sent may not be with­held for reas­ons con­trary to the prin­ciples of good faith.

³ Each joint au­thor may in­de­pend­ently bring an ac­tion for in­fringe­ment, but may only ask for re­lief for the be­ne­fit of all.

⁴ Where the in­di­vidu­al con­tri­bu­tions may be sep­ar­ated and there is no agree­ment to the con­trary, each joint au­thor may use his own con­tri­bu­tion in­de­pend­ently provided such use does not im­pair the ex­ploit­a­tion of the joint work.