[2] In September 2023, the Institut celebrated its 150 years anniversary on the occasion of the 81st session that took place in Angers, France.

[3] For the occasion, three French government ministers were invited to participate in the session and video messages from the President of France, Emmanuel Macron and the United Nations Secretary General, António Guterres were presented during the ceremony.

Recent resolutions from the organization cover many important areas such as universal jurisdiction, provisional measures, regime of wrecks, immunity, environment, use of force, etc.

The Institut publishes its Annuaire, containing the reports of the commissions, deliberations of the plenary sessions, and any resulting declarations and resolutions.

The Institut's website[8] houses an online library of information, including, but not limited to, declarations, resolutions, and some works in progress for future inclusion in the Annuaire.