Brazil's Supreme Court Reshapes Platform Liability: Analyzing the STF Ruling on Marco Civil

A landmark decision from Brazil's Supreme Court (STF) today fundamentally reshapes the landscape for platform liability in the country. The Court declared Article 19 of the Marco Civil da Internet—the law's core "safe harbor" provision—to be partially unconstitutional.

Previously, Article 19 required a specific court order to hold platforms civilly liable for third-party content. Today's ruling identifies this as a "partial legislative omission," stating the rule provided insufficient protection for fundamental rights and democracy.

My colleague Paula Bernardi and I have been analyzing the final thesis, and the key takeaways are significant:

• General Liability: Platforms are now generally subject to civil liability for damages from unlawful third-party content without a prior court order.
• Duty of Care: The Court introduced a "duty of care," holding providers liable for failing to immediately remove content that violates certain rights once they are notified.

For those following closely, here are the essential resources:

• The official "thesis" from the STF (in Portuguese)
• The broader global policy context (comprehensive ISOC paper on intermediary liability protections)
• Great analysis of this particular case from EFF