Swiss Civil Code

¹ If chat­tels be­long­ing to dif­fer­ent own­ers are mixed or joined to­geth­er such that they may no longer be sep­ar­ated without sub­stan­tial dam­age or pro­hib­it­ive la­bour and ex­pense, those in­volved ac­quire joint own­er­ship rights in the new ob­ject in pro­por­tion to the value of the con­stitu­ent parts at the time that they were mixed or joined.

² If one chat­tel is mixed with or joined to an­oth­er such that it ac­quires the char­ac­ter of a sec­ond­ary com­pon­ent of the lat­ter, the en­tire ob­ject be­longs to the own­er of the primary com­pon­ent.

³ Claims for dam­ages and un­just en­rich­ment are re­served.