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The Max Planck Encyclopedias of International Law has been converted from paid subscription to a Subscribe to Open model. Visit the announcement page to find out more.

 

The Max Planck Encyclopedias of International Law

Welcome to the home of the most trusted reference work in international law, the Max Planck Encyclopedia of Public International Law, as well as the recently launched Max Planck Encyclopedia of International Procedural Law. The two Encyclopedias can be searched and browsed together, or separately by using appropriate filters. Find out more about the Encyclopedias and their teams by following the links on this page.


Open Access and the Max Planck Encyclopedias of International Law

We are excited to share that we have reached our goal for renewals, and the Max Planck Encyclopedias of International Law has now been converted to a Subscribe to Open model.

Find out more about this groundbreaking initative.


 

Site News

April 1, 2025

Open Access and the Max Planck Encyclopedias of International Law

We are excited to share that we have reached our goal for renewals, and the Max Planck Encyclopedias of International Law has now been converted to a Subscribe to Open model.

March 27, 2025

MPEPIL March 2025 Update

20 updated articles and one new article are now available on the Max Planck Encyclopedia of Public International Law.

March 26, 2025

MPEiPro March 2025 Update

Four new articles have been added to the Max Planck Encyclopedia of International Procedural Law.

January 29, 2025

MPEPIL January 2025 Update

Three updated articles and two new articles are now available on the Max Planck Encyclopedia of Public International Law.

Latest Content

Nature, International Protection

Kerstin von der Decken, Moritz von Rochow