HERZOG.law is a boutique law firm specializing in inheritance law and litigation, with a broad expertise in cross-border matters.

Based on our extensive experience and specialization, we offer tailor-made advice and targeted representation in complex mandates with international aspects. HERZOG.law combines the cost efficiency and innovative strength of a specialized boutique with the experience gained from many years of working in an international commercial law firm.


Our practice focuses on cross-border inheritance matters and all related areas of law (including corporate law, foundations, real estate) as well as litigation.

The following is a selection of our expertise:


Inheritance Law

  • National and international estate proceedings
  • National and international estate planning and settlement
  • Wills and inheritance contracts
  • Division of the estate
  • Estate administration, representation of heirs, executorships
  • Advice and representation in connection with trusts / structures
  • Intellectual property rights in the estate
  • Art in the estate

Matrimonial and Registered Partnership Property Law

  • Matrimonial property law planning
  • Prenuptial agreements
  • Cohabitation agreements
  • Registered partnership property agreement

Protection of Adults

  • Advance Care Directive
  • Living Wills
  • Powers of Attorney
  • Representation of persons under guardianship in Inheritance Law cases

Company succession

  • Advice of entrepreneurs and of their successors
  • Shareholder Agreements

Dispute Resolution

  • Advising and representing companies, private individuals and public authorities in national and international litigation, arbitration and administrative proceedings
  • Enforcement of foreign awards in Switzerland
  • International legal assistance
  • Interim legal protection
  • Litigation risk assessment
  • Guidance in case of threatening escalation of a legal dispute


Quality is important to us. If necessary, we work with external specialists. We have a large national and international network of experts (tax, fiduciary, criminal law, etc.).

Sabine Herzog
Dr. iur., LL.M. (Columbia University), Attorney at Law, Certified Specialist SBA (Swiss Bar Association) Inheritance Law

Sabine Herzog has been practicing as an attorney since 2005. After working at the District Court of Horgen and the Commercial Court of the Canton of Zurich, she worked for nine years as an attorney in the litigation team of Baker McKenzie in Zurich. In 2015, Sabine Herzog completed her doctorate at the University of Lucerne on the topic of trusts and Swiss inheritance law. In September 2017, she opened the law firm HERZOG SCHÄR AG, which has continued to operate under the name HERZOG.law AG since August 2022.

Sabine Herzog is an experienced litigator with extensive know-how in business law matters and a specialization in inheritance law (Certified Specialist SBA Inheritance Law). She advises clients in complex inheritance law matters with links to other areas of law (including corporate law, foundation law and trusts). Due to her many years of experience in an international business law firm, she has extensive experience in advising and representing in mandates embedded in an international context.

Professional Experience:

  • since 09/2017 Attorney at Law at HERZOG SCHÄR AG today HERZOG.law AG
  • 2008-2017 Attorney at Law at Baker McKenzie Zurich
  • 2007/2008 Law Clerk at the Commercial Court of the Canton of Zurich
  • 2005/2006 Associate at a small boutique law firm in Zurich
  • 2002-2005 Law Clerk at the District Court Horgen


  • 2017 Certified Specialist SBA (Swiss Bar Association) Inheritance Law
  • 2015 PhD (Dr. iur.), University of Lucerne, Switzerland
  • 2012 LL.M., Columbia University, New York, USA
  • 2005 Admission to the Zurich Bar (valid throughout Switzerland)
  • 2001 Master’s Degree (Lic. iur.), University of Zurich, Switzerland
  • 1998 Bachelor Degree (Licence en Droit), Université Paris X-Nanterre, Paris, France


  • German
  • English
  • French
  • Spanish

Selected Publications:

Sabine Herzog, Werner Jahnel, Nachlassplanung, Praxisreihe Rechtsberatung, Erstberatung von Mandanten, Schulthess, Zürich 2022
Sabine Herzog, BGer 5A_984/2018: Keine notwendige passive Streitgenossenschaft bei der Klage auf Ungültigkeit einer letztwillig verfügten Willensvollstreckung, AJP 5/2020, 638 ff.
Sabine Herzog, BGE 4A_522/2018: Einschränkung des vertraglichen Auskunftsanspruchs der Erben, AJP 12/2019, 1345 ff.
Blogbeiträge bei swissblawg (ehemaliges Mitglied der Redaktion von swissblawg, www.swissblawg.ch)
Sabine Herzog, Tücken rund um die Ausschlagungsvermutung von Art. 566 Abs. 2 ZGB, AJP/PJA 5/2018, 555 ff.
Sabine Herzog, Trusts und schweizerisches Erbrecht, Einschränkungen bei der Anerkennung von Trusts aus der Perspektive des schweizerischen Erbrechts – unter besonderer Berücksichtigung von Pflichtteilen und deren prozessualer Durchsetzung, Luzerner Beiträge zur Rechtswissenschaft, Band 106, Zürich/Basel/Genf, 2016
Sabine Herzog/Marin Michaels/Jacopo Crivellaro, The EU Succession Regulation and its impact for non-Member States and non-Member State nationals, Trust & Trustees, Vol. 22, No. 2, March 2016, p. 227 ff.
Sabine Herzog/Jacopo Crivellaro/Basil Kirby, A rough Guide to the EU Succession Regulation, STEP Journal, February 2016, S. 69 ff.
Sabine Herzog/Petra Hanselmann, Familieninterne Unternehmensnachfolge – gesellschaftsrechtliche Gestaltungsmöglichkeiten, in: Jürg Schmid (Hrsg.), Gesellschaftsrecht und Notar, Beiträge der Weiterbildungsseminare der Stiftung Schweizerisches Notariat vom 1. September 2015 in Zürich und vom 8. September 2015 in Lausanne, Zürich 2016, 287 ff.
Kommentierung von Art. 285 bis Art. 294 ZPO, in: Baker & McKenzie Zürich (Hrsg.), Schweizerische Zivilprozessordnung (ZPO), Bern 2010

Selected Speeches:

Schulthess Forum Ehegüterrecht 2022, Alte Eheverträge, neues Erbrecht - Was ist zu tun?, Zürich, 7. Juli 2022
TREUHAND SUISSE, Familien- und Erbrecht 2021, Verfahrensrechtliche Aspekte, Zürich, November 2021
TREUHAND SUISSE, Familien- und Erbrecht 2021, Güter- und Erbrecht bei internationalen Sachverhalten, Zürich, November 2021
TREUHAND SUISSE, Familien- und Erbrecht 2019, Verfahrensrechtliche Aspekte, Zürich, 6. November 2019
TREUHAND SUISSE, Familien- und Erbrecht 2019, Güter- und Erbrecht bei internationalen Sachverhalten, Zürich, 13. November 2019
TREUHAND FUNDIERT Familien- und Erbrecht 2018, Verfahrensrechtliche Aspekte, 7. November 2018
TREUHAND FUNDIERT Familien- und Erbrecht 2018, Güter- und Erbrecht bei internationalen Sachverhalten, 14. November 2018
Ausschlagung: ausgewählte Rechtsprobleme, St. Galler Erbrechtstag 2018, 6. Juni 2018
Prozessuale Durchsetzung von Pflichtteilsansprüchen gegenüber Trusts aus Sicht des schweizerischen Erbrechts, St. Galler Erbrechtstag 2016, 29. Juni 2016
Familieninterne Unternehmensnachfolge – gesellschaftsrechtliche Gestaltungsmöglichkeiten, Weiterbildungsseminare der Stiftung Schweizerisches Notariat vom 1. September 2015
Referate in der ganzen Schweiz zum Thema «Erbrechtliche Grundsätze und Gestaltungsmöglichkeiten» für Kunden eines Immobilienmaklers, 2016/2017

Nina Mattmüller
Bachelor of Science in Business Law UAS Zurich

Nina Mattmüller is currently completing her Master in Law at the University of Lucerne. During and after her apprenticeship as a commercial clerk, she worked in various notary's offices in the Canton of Zurich. As part of this, she completed an advanced training in notarization and bankruptcy. Moreover, she obtained her bachelor's degree in business law at the Zurich University of Applied Sciences (ZHAW) in 2021. She has been working at HERZOG.law AG since August 2022.

During her work at the notary's office, Nina Mattmüller prepared and notarized real property transactions such as purchases, deeds of debt and easement agreements. She also handled bankruptcy proceedings for private individuals and small up to medium-sized companies and inheritance matters (estate inventories, estate administrations and representation of heirs).

Professional Experience:

  • since 08/2022 employee at HERZOG.law AG
  • 2017-2022 Notary's Office, Land Registry and Bankruptcy Office Oberwinterthur-Winterthur, Notary’s office secretary with special duties resp. Notary’s office secretary
  • 2016/2017 Notary's Office, Land Registry and Bankruptcy Office Winterthur-Altstadt, Notary’s office secretary
  • 2013-2016 Apprentice at Notary's Office, Land Registry and Bankruptcy Office Winterthur-Altstadt


  • since 09/2021 Master’s program in Law at the University of Lucerne
  • 2021 Bachelor of Science in Business Law UAS Zurich
  • 2019 specialized exam in notarization to become a notary and protesting officer
  • 2016 commercial clerk with federal certificate of proficiency and vocational baccaluareate


  • German
  • English

Legal notice

Ownership/responsibility HERZOG.law AG Universitätstrasse 9 CH-8006 Zürich T +41 (043) 268 30 10 contact(at)herzog.law

Enterprise identification number «UID» from the Swiss Federal Statistical Office: CHE-371.894.643

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