[rmc]

Yes http://europe-v-facebook.org/. It's possible because Facebook has a EU company, and hence is bound by EU law.

[Tyrannosaurs]

I'm not sure you even need an EU company, just to be doing business in the EU.

An opposite example is Rovio in Finland are being sued under US patent law by some bunch of patent trolls or other (and it's the Finnish Rovio office rather than any US subsidy named in the suit).

[alexchamberlain]

But there are international treaties relating to Patents - none for privacy.