Facebook declined to comment on the suit.
Europe-v-Facebook has been campaigning against Facebook over privacy and data protection issues for years.
It filed complaints with the Irish Data Protection Commissioner (DPC) which led to an audit of Facebook's privacy practices. As a result, the DPC recommended further actions and Facebook made a series of commitments to improve its privacy practices in the EU.
More recently, the group filed a complaint with the DPC over Facebook's alleged involvement in the Prism program under which the NSA could spy on European Facebook users' data because personal data is exchanged between the EU and the U.S. The DPC said this exchange is legal. But Europe-v-Facebook asked the Irish High Court to review and reverse that decision. That court referred the case to the Court of Justice of the European Union (CJEU) in June.
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