A Comparative Analysis of the Legal Nature of Contractual Interdependence in Modern French and Iranian Law

Document Type : Original Article

Author
Mostafa Harati
Department of Private Law, Faculty of Law, University of Religions and Denominations, Qom, Iran
10.22047/hsd.2026.545151.1103
Abstract
When several contracts are concluded together in order to achieve a single general goal, they actually form a contractual set. Therefore, it must be logically accepted that the implementation of each of them affects the life of other contracts. However, such an argument seems illogical and in practice creates numerous problems in terms of insecurity. But on the other hand, no legal establishment is able to determine the legal system of such contracts and create a dynamic legal relationship between them. The new legal phenomenon demands a new naming requirement. Therefore, the perspective of contractual connection and dependence seems appropriate. This concept emphasizes the connection between contracts and does not include the exchange and substitution between contracts. This theory examines a new understanding of the direction and the creation of a subtle distinction between the effects of the relativity of contracts and the ability to invoke legal acts against others. In this study, using a descriptive-analytical method, I intend to examine the concept and effects of related contracts using modern French law and explain its position in Iranian law.
Keywords
Interdependence
chain collapse of contracts
economic equilibrium
principle of economic cohesion
good faith
1.       Gide, Ch. et Charles Rist, Ch., (1922), Histoire des doctrines économiques depuis les physiocrates jusqu'à nos jours, 4e édition, Paris, Sirey
2.       Teyssié, B., (1975), Les groupes de contrats, Bibliothèque de droit privé, Paris, L.G.D.J.
3.       P. Malaurie, P., Aynès, L et Stoffel-Munck, P., (2022), Les Obligations, 9e éd, Defrénois
4.       Chénedé, F., Lequette, Y., (2022), Droit civil les obligations, 13e edition, Dalloz-Precis
5.       Van Ommeslaghe, P., (2023), Droit des obligations, 19e edition, Cour Dalloz
Articles
6.       Bros, S., (2016), L'interdépendance contractuelle, la Cour de cassation et la réforme du droit des contrats, Recueil Dalloz, p.29-35
7.       Fauvarque-Cosson, B., (2013), L'interdépendance contractuelle en droit comparé, Revue des contrats, p.1079-1083
8.       Gautier, P., (2012), Un nouveau concept est né : les « concessions indirectes », prises dans l'interdépendance contractuelle, RTD Civ., p.128-135
9.       Pellé, S., (2007), La notion d'interdépendance contractuelle. Contribution à l'étude des ensembles de contrats, RTD Civ., p.833-840
10.   Delpech, X., (2013), Interdépendance contractuelle : mise en échec de la clause de divisibilité, Dalloz actualité, p.145-155
11.   Delpech, X., (2013), Interdépendance contractuelle : quel régime procédural?, n°8, L'ESSENTIEL Droit des contrats, p.35-40
12.   Le Mesle, L., (2013), L'interdépendance des contrats, n°3, Revue des contrats, p.849-861
Jurisprudances
13.   Cass., ch. mixte, 17 mai 2013, P+B+R+I, n° 11-22.768
14.   Cass., ch. mixte, 17 mai 2013, P+B+R+I, n° 11-22.927
15.    Cass., ch. mixte, 17 mai 2013, n° 11-22.927 et n° 11-22.768
16.   Cass. com., 4 juill. 2018, no 17-15597
Cass. com., 12 juill. 2017, nos 15-23552
Development of humanities
Volume 6, Issue 12 - Serial Number 12
Humanities
Volume 6, Autumn and Winter 2025-2026, No. 12
March 2026
Pages 129-144