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Gion Jegher


Position: Partner
Practice Areas: Banking & Finance , Capital Markets , Dispute Resolution , Insolvency & Restructuring
Field-Display: Banking & Finance Team , Capital Markets Team , Dispute Resolution Team , Insolvency & Restructuring Team

Dr Gion Jegher is a member of the Dispute Resolution, Insolvency & Restructuring and Banking & Finance Teams. He is a real expert in matters of private international law. This area addresses all legal issues arising in cross-border cases, such as insolvency of multi-national companies or transnational litigation.


+41 44 254 55 55



Admission to the Bar

Admitted in Switzerland (2000) 

Practice Areas

  • Dispute Resolution
  • Insolvency & Restructuring
  • Banking & Finance


  • University of Basel (Dr. iur., 2002, Walther Hug prize; lic. iur., 1993)
  • Duke University (LL.M., 1996)


  • German
  • English
  • French
  • Russian


  • Zurich and Swiss Bar Association
  • Pro Iure
  • Freiwillige Akademische Gesellschaft


Melanie Cica
+41 44 254 55 15

Monika Bren
+41 44 254 55 48


Prager Dreifuss AG is well positioned to advise creditors such as banks, hedge funds or other financial institutions, in large national and cross-border insolvency and restructuring proceedings. — Legal 500 EMEA 2022

Another pillar of the practice are arbitration proceedings and enforcement strategies of arbitration awards. Team head Daniel Hayek  and Gion Christian Casanova  are also well versed in acting in bankruptcy-related litigation. Gion Jegher, a key lawyer of the team,  covers insolvencies, reorganisations and restructurings. — Legal 500 EMEA 2022

The team takes a holistic view of its work and understands the insolvency and recovery landscape across different sectors, different jurisdictions and different sectors. I have found them to be strategic and to look outside the box for solutions which has proven to be key for successful results. They are pragmatic, responsive and quick to react, and very much team players in the context of large scale insolvent matters. — Legal 500 EMEA 2022

Prager has a diverse and highly qualified team. They work internationally, on high-value cases and are great in collaborating with a diversity of law firms worldwide. — Legal 500 EMEA 2022

Great team. They act with a transactional view. — Legal 500 EMEA 2022 


Subject: Corporate News, Litigation
Autor: Gion Jegher
Paper: Schulthess Verlag
Reading time: 1 Min

Out now: The Absent Opera Singer and Other Short Stories

Thirty exciting short stories for witty lawyers available from Schulthess Publisher.

Had enough of Sudoku and crossword puzzles? Here is the alternative for law students and legal practitioners: Prager Dreifuss partner Dr. Gion Jegher just published the fourth edition of the popular case collection on international private law.

Thirty exciting short stories cover the whole spectrum of international private law. The solutions, methodological tips for case handling and a detailed index provide readers with valuable support in dealing with complex conflict of laws issues. Relevant provisions of foreign law can be found in the separate appendix.

The well-proven concept has been revised and supplemented for this new edition. The cases are now arranged in thematic order and indicate their degree of difficulty. The two authors, Dr. Gion Jegher and Prof. Dr. Corinne Widmer Lüchinger (University of Basel), have revised the 25 cases of the previous edition and brought them up to date. Five new cases have been added.

All thirty cases are accompanied once again by brilliant illustrations of artist Thomas Ott. The book is highly valuable for both students and legal practitioners.

You can order the book (in German & PrintPlu§) directly from the publisher.

Subject: Corporate News
Autor: Marcel Frey, Gion Jegher, Bernhard C. Lauterburg

Vis Moot Court # 2 — Next Trial Run at Prager Dreifuss

On Wednesday, March 16, 2022, the second trial run hearing within a week took place at the Zurich office of Prager Dreifuss with counsel for claimant from the University of Zurich (Lara Langer and Hadjar Sbaih) and counsel for respondent from the University of Lucerne (Asia Ponti and Andrea Greub), this time “in personal attendance”.

Our attorneys Marcel Frey (chairman), Gion Jegher and Bernhard Lauterburg constituted the arbitration tribunal. They asked parties' counsel many challenging questions. The young law students gave detailed answers showing great command of the facts and the law. The tribunal was deeply impressed by the professional expertise of the four students. Its only advice to the new generation: More passion and less argument is sometimes more. The verdict in the end: a narrow win for Lucerne.

Subject: Corporate News
Autor: Marcel Frey, Gion Jegher, Bernhard C. Lauterburg
Reading time: 1 Min

Vis Moot Court — Second Trial Run at Prager Dreifuss

The second Moot Court practice run this year at Prager Dreifuss! On 17 March 2023, there was another encounter before the arbitral tribunal, the case was the same. The hearing began with the respondent — state-owned Equatoriana Geoscience Ltd — represented by Tsagaanlkham Badamkhand (procedural issues) and Iphigénie Carbonel (substantive issues) from the University of Basel. Respondent presented convincing and well-argued points against the jurisdiction of the tribunal.

The claimant—drone manufacturer Drone Eye plc—was represented by Perla Bachmann (procedural issues) and Anaïs Frischknecht (substantive issues) from the University of Zurich. Counsel for claimant also argued in the very best English, already the briefs submitted by the parties were of the highest standard. The debate turned – inter alia – on the question what qualifies as an aircraft and is therefore excluded from the scope of the applicable treaty on international sales of goods (CISG). The students researched thoroughly the jurisprudence available, assessing decisions on hot air balloons, submarines and used cars.

In the end, the team from the University of Zurich, with its good arguments and convincing presentation, was able to secure a narrow advantage with arbitral tribunal. The arbitration panel consisted of Marcel Frey as chairman and the two party-nominated arbitrators Gion Jegher and Bernhard Lauterburg. We wish both teams every success in the competition!

Subject: Corporate News
Autor: Marcel Frey, Gion Jegher, Bernhard C. Lauterburg

Vis Moot Court — Trial Run at Prager Dreifuss

Hybrid hearing with counsel for claimant from the University of St. Gallen (Damian Wyss and Jens Neese) and counsel for respondent from the University of Basel (Roger Reschek and Océane Kessler) on Monday, March 14, 2022, at the Zurich office of Prager Dreifuss:

A sudden withdrawal from an “in person” attendance by the Basel team due to a Covid contact issue challenged us to find an alternate setup for the hearing at short notice. Thanks to our IT hero Patrick Schmidhalter, we were able to prepare a hybrid courtroom with counsel for respondent (Basel) on screen and counsel for claimant (St. Gallen) in person. Our attorneys Marcel Frey (chairman), Gion Jegher and Bernhard Lauterburg formed the arbitral tribunal. They were deeply impressed by the technical language skills and the compelling arguments displayed by the four law students acting as counsel. While the St. Gallen team had a slight advantage in the room, the Basel team was credited with the digital disadvantage. The verdict at the end: a well-deserved draw.

Subject: Corporate News
Autor: Marcel Frey, Gion Jegher, Bernhard C. Lauterburg
Reading time: 1 Min

Vis Moot Court — Trial Run at Prager Dreifuss

Finally, another student showdown on the 6th floor at Prager Dreifuss! On 8 March 2023, the claimant, drone manufacturer Drone Eye plc, represented by Filippo Börner (procedural issues) and Manuel Constam (substantive issues) from the University of St. Gallen, attended the oral hearing in the arbitral proceedings against respondent, state-owned company Equatoriana Geoscience Ltd, represented by Julia Bischof (procedural issues) and Alex Brückler (substantive issues) from the University of Bern.

In substance, claimant wants to be awarded damages under the purchase and supply agreement for 6 reconnaissance aircraft which it concluded with respondent. However, allegations of corruption, fraud and misrepresentation as well as dubious machinations play an important role alongside questions of jurisdiction and applicable law. The St. Gallen team displayed good file knowledge and communicated well. The students from Bern counterpunched with solid technical details on the purchase objects and valiantly countered the barrage of questions by the tribunal.

Well done! But you can always learn something new. The party representatives were able to take home some valuable input from the arbitrators, who could not come to a unanimous finding and decided to split the prize money equally among both contesting teams.