UPC Telekabel Wien (2014)
The EU Court of Justice ruled that internet intermediaries can be ordered to block copyright-infringing content, but only with measures that strike a fair balance between rights holders and users. The ruling established the 'reasonable measures' standard for blocking orders.
The ruling became the legal foundation for site-blocking orders across Europe.
It established that intermediaries owe an obligation of means, not results, when blocking infringing content.
The Paris court explicitly cited this ruling to reject Canal+'s penalty request against Cloudflare.
