Johanna Wirth is a partner in Hengeler Mueller’s dispute resolution group. She specializes in domestic and international litigation, arbitration and ADR, with a special focus on complex commercial litigation and arbitration.

Johanna Wirth has litigated commercial, corporate and shareholders’, finance and post-M&A disputes for German and foreign clients. Her clients include companies in the energy and telecommunication sector, as well as German and international financial institutions.

The arbitration experience of Johanna Wirth covers ad hoc and institutional arbitration, both domestically and internationally. Highlights of her current work include advising Deutsche Telekom AG in the US-$ multi-billion arbitral proceedings initiated by the Federal Republic of Germany in the matter of Toll Collect GmbH. Post-M&A disputes recently handled by Johanna Wirth include the representation of EWE in arbitral proceedings concerning the sale of VNG-shares to EnBW. Her recent litigation practice includes representing Bankhaus Sal. Oppenheim in proceedings initiated by Madeleine Schickedanz.

In recent years, Johanna Wirth has handled several complex domestic and cross-border investigations, as well as other compliance matters.


  • Admitted to bar 2008
  • Attorney-at-Law (New York) 
  • Humboldt-University of Berlin
  • New York University (LL.M.)