Dr. Petra Rihar specializes in litigation and arbitration. She represents individuals and companies before state courts and arbitral tribunals in domestic and cross-border disputes, in interim relief proceedings as well as in the recognition and enforcement of foreign judgments. She also advises on national and international commercial, contract and corporate law, labour law and international private law.

Petra Rihar has served as party representative, arbitrator, legal expert and secretary to the tribunal in numerous institutional and ad hoc arbitrations governed by a variety of substantive and procedural laws. Her work experience covers a wide range of sectors and contracts, cross-border disputes and foreign investments in state infrastructure (investor-state disputes).

Who’s Who Legal: Arbitration 2020 recommends Petra Rihar as “Future Leader” in arbitration: «Petra Rihar is “an outstanding arbitrator” who is well acquainted with handling complex commercial and investment-related disputes».

Who’s Who Legal: Arbitration 2021 – Future Leaders states: «Peers and clients say: “Petra is a highly experienced arbitration practitioner who is valued for her thorough work, excellent legal knowledge and talent for efficient procedural solutions in complicated situations”, “She is a very good arbitration lawyer with excellent knowledge of the law and a very fast and proactive approach to relevant issues in the arbitration case”; “She is excellent arbitrator and counsel”, “Petra is an absolutely reliable and highly professional lawyer, with an outstanding work ethic and friendly approach”».

2020 Partner with LANTER
2013 Partner with law firm in Zurich
2006 Associate and Senior Associate with international law firms in Zurich and London
2006 University of Lucerne, Dr. iur.
2006 Columbia Law School, LL.M.
2004 Legal Counsel at The Thomson Corporation, Zug
2004 Admission to the Zurich bar (admitted to all Swiss courts)
2001 Law clerk at the District Court of Zurich and teaching assistant in corporate, banking and securities law, University of Zurich
2000 University of Zurich, lic. iur.



Arbitration (institutional and ad hoc, commercial and investment disputes)
Litigation (domestic and cross-border)
Corporate and commercial law
Contract law
Labour law
International private law


Author and co-author of various articles on Swiss arbitration law and decisions of the Swiss Federal Supreme Court published on Kluwer Arbitration Blog and Practical Law Arbitration:

Petra Rihar, Das Einzelunternehmen im Schweizer Privatrecht (The Sole Proprietorship under Swiss law), Zurich 2007 (Luzerner Beiträge zur Rechtswissenschaft, Band 17)

Petra Rihar, Obseg varstva pravic blagovnih in storitvenih znamk (The Scope of Protection of Trade and Service Marks under Swiss and Slovene Law), 11 Pravnik 717 (1997)