Section 50e(2) GWB lays down the conditions for sharing confidential information:  The receiving competition authority must: 1. use the information only for the purpose of applying provisions of competition law and with regard to the subject matter of the investigation for which it was collected by the Bundeskartellamt, and 2. maintain the confidentiality of the information and provide such information to third parties only if the Bundeskartellamt agrees to such provision; this also applies to the disclosure of confidential information in court and administrative proceedings.