On May 12, 2016, the Court of Justice of the European Union’s (CJEU) Advocate General, Campos Sánchez-Bordona, published his opinion on a question referred to the CJEU for a preliminary ruling. The opinion argues that dynamic IP addresses should be considered to be personal data under European law. Moreover, the opinion asserts that Member States’ laws that limit the ability to store such personal data beyond the restrictions permitted in Directive 95/46EC (the Data Protection Directive) are non-compliant with European law. Although the CJEU’s final decision does not have to follow this opinion, the advocate general’s arguments are followed more often than not.

This week, the Court of Justice of the European Union (“CJEU”) ruled that the EU-US Safe Harbor Decision is invalid in Case C-362/14 (the “Schrems” case).  This followed a similar opinion from its Advocate General, which also sets out the facts of the case.

The decision will impact businesses that rely on the EU-US Safe Harbor to legitimize their storage in, or access from, the US of personal data that is subject to EU data protection rules. It could affect cloud service providers, companies that use cloud services, intragroup shared services and any other export flows to the US that rely on Safe Harbor for data transfer.

In this post we look at what the CJEU decided and on what grounds, and what affected businesses should do next.