That's only partially true; at the moment, Nintendo would have to issue a cease and desist or enter a lawsuit with the offending websites. I'm not entirely sure of the details, since Nintendo is a foreign company, but copyright laws are not international and I doubt that they would be able to actually shut down PO/Smogon.
However, with SOPA, Nintendo (presumably it'd have to be Nintendo of America) could seek court orders to block access to these websites, regardless of the lack of international copyright laws or lack of a lawsuit.
Perhaps Nintendo was a poor example, as them and Game Freak are foreign, but similar situations will arise for other companies.
However, with SOPA, Nintendo (presumably it'd have to be Nintendo of America) could seek court orders to block access to these websites, regardless of the lack of international copyright laws or lack of a lawsuit.
Perhaps Nintendo was a poor example, as them and Game Freak are foreign, but similar situations will arise for other companies.