More precisely, Article 1 of the Protocol stated that the accession treaty would have to:
make provision for preserving the specific
characteristics of the Union and Union law, in particular
with regard to: (a) the specific arrangements for the
Union's possible participation in the control bodies of
the European Convention; (b) the mechanisms
necessary to ensure that proceedings by non-Member
states and individual applications are correctly
addressed to Member States and/or the Union as
appropriate.