(1) Any person who uses a provision in a contract with an author which deviates from the joint remuneration agreement to the detriment of the author may be required by the injured party to cease and desist if and insofar as that person
1. has themselves established the joint remuneration agreement as the user of a work or
2. is a member of an association of users of a work which established the joint remuneration agreement.
Those associations of authors or of users of a work which and those individual users of a work who established the joint agreement are entitled to injunctive relief.
(2) Section 8c (1), (2) no. 1 and (3) and section 12 (1), (3) and (4), and section 13 (1) of the Act against Unfair Competition (Gesetz gegen den unlauteren Wettbewerb) apply accordingly to the procedure; if the notification is justified, the notifying party may demand reimbursement of necessary expenses from the party notified. Section 103 applies in respect of publication of the judgment.