Risks and opportunities This section provides important additional information and explains recent changes in the risks and opportunities as described in the 2018 Annual Report. Readers are also referred to the Disclaimer at the end of this report. Operational risks The risk significance in the risk category “Risks relating to IT/NT network operations, United States” was regraded from medium to low at the beginning of 2019. This was due not only to the geographical redundancies that were put in place, but also to the adequate disaster recovery functions for the billing systems for customer services, which were rated as functional in tests. The risk is thus mitigated and will no longer be reported. Litigation Lawsuits filed by partnering publishers of telephone directories. In the lawsuits filed by the partnering publishers of telephone directories, two of the suits suspended in the first instance were withdrawn in March 2019 and three appeals were withdrawn in October 2019 after the already reported ruling of the Federal Court of Justice in January 2019 went in our favor. As a result, seven proceedings are still pending with a total claimed amount of approximately EUR 50 million plus interest. For six of these suits, appeal proceedings are still in process with the German Federal Court of Justice while one claim remains suspended. Proceedings before the administrative court were brought to a close after the remaining two plaintiffs withdrew their respective suits under administrative law. Arbitration proceedings against T‑Mobile Polska S.A. In August 2019, Polish telecommunications provider P4 Sp. z o.o. initiated arbitration proceedings against T‑Mobile Polska S.A. The plaintiff is claiming around PLN 400 million (around EUR 93 million) plus interest as payment for its alleged entitlement to retroactive mobile termination rates. Anti-trust proceedings Claims for damages against Slovak Telekom following a European Commission decision to impose fines. On February 21, 2019, Slovak Telekom and Deutsche Telekom filed an appeal with the European Court of Justice against the ruling by the General Court of the European Union of December 13, 2018 in which the decision of the European Commission was partially overturned and the level of the fines reduced. With this appeal, Slovak Telekom and Deutsche Telekom are seeking, inter alia, to overturn the decision finding Slovak Telekom’s behavior as abusive. Assessment of the aggregate risk position At the time of preparing this report, neither our risk management system nor our management could identify any material risks to the continued existence of Deutsche Telekom AG or a significant Group company as a going concern.