Artikel 11

1. International registration and related duties, as well as all other administrative tasks, under or concerning this Protocol, shall be performed by the International Bureau.
2. a) The International Bureau shall, in accordance with the directions of the Assembly, make the preparations for the conferences of revision of this Protocol.
b) The International Bureau may consult with intergovernmental and international non-governmental organizations concerning preparations for such conferences of revision.
c) The Director General and persons designated by him shall take part, without the right to vote, in the discussions at such conferences of revision.
3. The International Bureau shall carry out any other tasks assigned to it in relation to this Protocol.