The offer shall take effect when it reaches the addressee.
The offercanberevokediftherevocationreaches theaddressee before the latter has expressed
hisacceptance.
However, the offer may not be revoked if it states that,before a deadline for acceptance, it is
irrevocable or if the addressee hasreasonable grounds to believe that the offer is irrevocable and
acted accordingly.
The offer shall end when its rejection reached the offeror.
Unofficial translation
Spot-checked
In force from 15 December 2010
Source page 66