Dr Stefan Riegler > Wolf Theiss Rechtsanwalte GmbH & CoKG > Vienna, Austria > Lawyer Profile

Wolf Theiss Rechtsanwalte GmbH & CoKG

Work Department

Dispute Resolution. Stefan specializes in advising companies on commercial disputes, especially in the energy, construction and infrastructure sectors; he is also experienced in handling corporate, post-M&A and banking disputes. Stefan has acted as counsel and arbitrator under major arbitration rules, such as the ICC, VIAC, DIS and Swiss Rules, as well as in ad hoc arbitration proceedings. In addition, he advises on private enforcement issues.


Partner and head of the firm-wide Disputes practice at Wolf Theiss.


Stefan is Vice-president of the Austrian Arbitration Association (ArbAut), a member of the board of the Vienna International Arbitral Centre (VIAC), member of the ICC Commission on Arbitration and of various other international arbitration organisations, as well as being the author of numerous articles and publications on arbitration.

Lawyer Rankings

Austria > Dispute resolution: commercial litigation

Working in close junction with various other practice areas and offices across its network enables Wolf Theiss Rechtsanwalte GmbH & CoKG to handle a wide range of disputes, most notably financial services and banking litigation, insolvency-related disputes, corporate and shareholder disputes alongside contentious product liability and competition law matters. Stefan Riegler heads the dispute resolution practice and is experienced in litigation and arbitration with a focus on energy, construction and infrastructure sector work. In December 2019, litigation and white-collar criminal law expert Holger Bielesz joined Cerha Hempel.

Austria > Dispute resolution: arbitration and mediation

Known for its strong cross-border capabilities, Wolf Theiss Rechtsanwalte GmbH & CoKG is notably active in the CEE and SEE region, handling proceedings under the ICSID, UNCITRAL, ICC, LCIA, VIAC, CCIR, CAS, DIS and Swiss rules. Representing construction and energy sector clients is a particular area of expertise – and part of team head Stefan Riegler‘s skill set – but the practice’s client portfolio also includes private clients and players from various other sectors. Counsel Venus Valentina Wong is noted for her expertise handling Greater China-related matters and also provides assistance with the enforcement of foreign arbitral awards, an area the team has recently been particularly active in.