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As of the 1st April 2025, the Max Planck Encyclopedias of International Law has been made open access through to at least March 2026, through a Subscribe to Open Model. You can read more about this initiative on the announcement page.

The Subscribe to Open model relies on customers renewing their subscriptions annually. This continued support is crucial for maintaining the financial sustainability of the product. By renewing your subscription, you help to ensure that this valuable resource remains open and accessible to all, year after year.

If you are a researcher, we encourage you to get in touch with your librarian and recommend the Max Planck Encyclopedias of International Law to help ensure that it remains open.

To find out more about institutional subscriptions and pricing, please use the contact details below.

Customers outside North and South America

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Customers in North and South American

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