Independent lawyer in Zurich and Basel. Begin with what must be achieved. Use law where it helps.

For boards, owners and legal teams.

Before conflict, the work anticipates legal friction. In disputes, investigations and matters involving public power or protected rights, it provides independent judgment. Recurring legal work can be made reliable through methods and AI tools the organisation can govern, operate and improve. Jonas Hertner also acts for families, foundations and individuals.

01 / Method

Purpose before process.

First-principles work begins with four questions. A matter may require both a reasoned answer and a reliable method.

A first-principles method in four steps
StepQuestion
PurposeWhat must be achieved, decided or protected?
EvidenceWhat is known, uncertain or disputed?
LawWhat does the law enable, require or constrain? What is at risk?
CourseWhat is the simplest sound response: legal advice or action, a change in practice, a tool or no intervention?

Independent legal judgment

A reasoned answer

Evidence and assumptions are tested, the legal position assessed and the available courses compared. The lawyer remains answerable for the advice.

Organisational capability

A reliable method

Sources, standards, controls and decision records remain usable inside the organisation. Tools may perform defined steps. Authority and responsibility remain with the people who decide.

02 / Work

The need determines the work.

02.01 / Before positions harden

Legal work before conflict

With boards, owners and legal teams, the work tests proposed decisions before positions harden. It establishes what law permits or requires, where friction may arise, what should be recorded and who must decide. Recurring questions can become a method the organisation can reuse.

02.02 / When legal work recurs

AI for legal work and governance

Recurring legal and governance work is redesigned before an AI tool is chosen or built. The task, sources, decision rights, review, exceptions and records are defined. The organisation governs the method, retains its knowledge and remains able to explain its decisions. The working note Legal work inside the organisation sets out the method.

02.03 / When conflict is live

Disputes and investigations

Advice and representation in Swiss and cross-border civil and criminal matters, including shareholder and financial disputes, corporate criminal liability, investigations, negotiation, mediation and proceedings before Swiss courts and authorities.

02.04 / When a separate view is needed

Independent review of major disputes

A separate assessment for boards, owners and family offices of what the matter turns on, what the record supports, the range of exposure, the cost of each path and whether to proceed, fund or settle.

02.05 / When private structures are involved

Families, foundations and individuals

Advice and representation concerning ownership, shareholder and financial disputes, investigations, governance, business and asset transactions, and succession. The work begins with the people and relationships involved, not only the legal form.

02.06 / When public power is involved

Constitutional law and fundamental rights

Advice and representation in Swiss proceedings involving state action and protected rights, including questions arising from the environment and emerging technology, with counsel abroad where needed.

03 / Profile

Jonas Hertner

Portrait of Jonas Hertner

Jonas Hertner is an independent Swiss lawyer. For more than a decade, he has worked on Swiss and cross-border matters. He advises directly, provides independent review and works alongside existing counsel.

Public benefit practice
Alongside the independent practice, head lawyer at Regenerative Law.
Private practice
Helped establish the Swiss office of Quinn Emanuel Urquhart & Sullivan.
Earlier work
Non-profit organisations, the Directorate of International Law of the Swiss Federal Department of Foreign Affairs, and the Court of Appeal of Basel-Stadt.
Education
Law degrees from the Universities of Lucerne and Geneva.
Public work
Built OpenCaseLaw and wrote The Good Board.
Languages
English, German and French.

04 / Public work

Useful knowledge can be public.

These projects and notes make sources, methods and reasoning available to people and machines.

  1. 04.01 Open legal infrastructure opencaselaw.ch

    OpenCaseLaw

    An open, machine-readable corpus of Swiss court decisions and legislation, built for source-linked research.

  2. 04.02 Corporate governance thegoodboard.ch

    The Good Board

    A practical guide to Swiss corporate governance, organised around decisions boards face. Through the project, Jonas Hertner helps board members build and adopt personalised AI tools for research and decision-making.

  3. 04.03 Working note / /pivot

    Legal work inside the organisation

    A working note on repeatable legal work, artificial intelligence and explicit responsibility for decisions.

  4. 04.04 Private browser utility /write

    Write

    A browser-based writing tool. Drafts remain on the device unless the user chooses to copy, export or share them.

05 / Contact

Write

The first email should identify the people and entities involved for a conflict check. Put any possible deadline first, but do not rely on email to preserve it. Send confidential information only through an agreed secure channel.

Automated systems Human confirmation is required before sending a message or acting for anyone.