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International Contract Law


Disclaimer: This course has been updated to the best of our knowledge at the current time of publishing. Due to the Covid 19 pandemic and the fluctuating changes in lock down regulations all information contained within this course description are subject to change up to 1 September 2020.
Due to the uncertainty of the Covid 19 virus after 1 September 2020, changes to the course description can only be made in the event of strict necessity and only in the circumstances where the interests of the students are not impinged. Should there be a need for any change during the duration of the course, this will be informed to all students on a timely basis and will not be to the prejudice of students. Modifications after 1 September 2020 may only be done with the approval and consent of the Faculty Board.


This course provides students with a thorough knowledge of, and deep insight into contract law problems and solutions in an international perspective.
This course consists of two parts.
The first part is dedicated to the general rules of contract law in civil and common law jurisdictions. In this part, the major subjects covered will be the formation of the contract, defects of consent, interpretation of the contract, performance and non-performance, and remedies due to non-performance.
The second part is dedicated to Contract Law in practice. In this part, rules concerning several nominate contracts as regulated by inter- and supranational instruments will be discussed. Furthermore, students will be trained by participating in moot court sessions and in drafting contracts. During the course, attention will be paid to civil law systems, common law systems, as well as to transnational ‘principles’ like the DCFR.


Programme Coordinator LLM (Adv) International Civil and Commercial Law
Office for International Education / Leiden Law School


Dr. Jaap Baaij
T: +31 (0)71 527 3615 /


Seminars, group discussions, supervised writing, and participating in a moot court.


Mandatory Moot Court preparation and participation (fail or pass)
Written exam (100%)

In order to complete the course successfully, students must acquire both a pass for moot court and at least a 5.5 final grade for the written exam.

Students that do not acquire a pass for the moot court will be required to, at the discretion of the examiner, submit a new paper in preparation for a moot court session, perform a new oral performance of a moot court session in a role assigned by the teacher (which need not be the same as a role previously assigned).

The retake of the written exam will be an oral exam (100%).


Full degree in law granting access to the legal profession (or equivalent).