How do we incorporate and embed rules and principles that enter the private law system?

The Institute of Private Law was closely involved in the development of Nieuw Burgerlijk Wetboek (the Civil Code of the Netherlands, which came about between 1948 and 1992). It has continued to fulfil this socially engaged role over the years. It also made a significant contribution to the development…

The Institute of Private Law is part of the Leiden Law School.

On 9 September 2020, Ruben de Graaff defended his thesis 'Concurrence in European Private Law'. The doctoral research was supervised by Prof. A.G. Castermans and Prof. S.C.G. Van den Bogaert.

On Wednesday 13 December 2017 René Hage defended his doctoral thesis entitled ‘Handhaving van privaatrecht door toezichthouders’ (Enforcement of private law by regulatory authorities).

The Private International Law Department provides academic education and performs research in the field of private international law.

Just published: Nederlands internationaal privaatrecht Special issue: Private international law and finance

On 30 June 2016, Eesa Fredericks is expected to defend his Ph.D.-thesis ‘Contractual Capacity in Private International Law’ in Leiden. Supervisors are prof. Sierd J. Schaafsma (Leiden) and prof. Jan Neels (Johannesburg).

Just published: United in incoherence – Private law concepts under pressure from European financial law (in Dutch), in: Tijdschift voor privaatrecht 2017-4

On 19 September 2019, Lynette Janssen defended her thesis 'EU Bank Resolution Framework: A comparative study on the relation with national private law'. The doctoral research was supervised by Prof.mr. W.A.K. Rank and prof. M. Haentjens.

On 2 December 2016, the Coherent Private Law research group organised an international research conference under the title “Private law and market regulation – interaction, interference or inconsistency?”. The central theme of the conference was the juxtaposition of private law doctrines and public…

On Wednesday 13 December at 16.15 hrs René Hage will defend his doctoral thesis entitled ‘Handhaving van privaatrecht door toezichthouders’ (Enforcement of private law by regulatory authorities) at the Academy Building of Leiden University. His supervisors are Professor Jaap Hijma and Dr Iris Houben…

Tycho de Graaf has been appointed Professor of Technology and Private Law at Leiden University as of 1 June 2022.

How should jurisdictions, both on the national and on the supra-national level, handle the interaction between public and private law where it regards the regulation of financial markets?

On Friday 2 December 2016, an international, multidisciplinary Research Conference on “Private law and market regulation – interaction, interference or inconsistency?” will be held in Leiden, hosted by the Coherent Private Law research group of Leiden Law School. The conference will be focused on two…

On 30 June 2016, Eesa Fredericks is expected to defend his Ph.D.-thesis ‘Contractual Capacity in Private International Law’ in Leiden. Supervisors are prof. Sierd J. Schaafsma (Leiden) and prof. Jan Neels (Johannesburg).

Ekaterina Pannebakker has joined the section Private International Law as lecturer in September 2016. Ekaterina graduated in French law and Russian law (2004 and 2009, private law) and obtained a postgraduate LL.M. at Erasmus University Rotterdam (2011).

A publication on the location of financial losses and the validity of jurisdiction clauses after the CJEU’s Kolassa v Barclays Bank and Profit Investment v Ossi judgments.

The Faculty of Law has five institutes:

The Department of Civil Law is responsible for education and research in the field of civil law. We teach the master’s degree programme Civiel Recht (Civil Law LL.M.), attracting many students each year from Leiden and elsewhere.

Cathalijne van der Plas will become Professor of Private International Law (0.4 fte) at Leiden University as of 1 October 2021. She succeeds Prof. Sierd Schaafsma who has become a judge at the Supreme Court as of 1 May 2021.

From deepfakes and disinformation to killer robots, surgical robots and AI lawmaking: AI (Artificial Intelligence) is changing our world. That raises the question whether this requires some form of regulation. At eLaw, the Center for Law and Digital Technologies at Leiden University, prof. Bart Custers…

In addition to the walk-in tours at the visitor center, we also offer private tours for groups. These tours delve deeper into the history of the building, but also offer the opportunity to learn more about astronomy in general.

The institute offers private Arabic tutoring to the general public, taught by the NVIC staff teachers. We offer classes in both Modern Standard Arabic and Egyptian Colloquial Arabic, on all levels.

Welcome to the Business & Law Research Network!

A Small Private Online Course (SPOC) is an online academic subject for a limited group of participants.

On 17 October 2018, Henriëtte Weststrate defended her doctoral thesis 'De Notaris en Private Rechtspraak'. The doctoral research was supervised by Prof.dr. H.J. van der Herik and Prof. mr. G.J. Meijer.