The state of Louisiana is suing MoveOn over a billboard that criticizes the governor using a state publicity slogan.

This lawsuit is based on trademark law. The article unwisely calls it "IP law", which is confusing since it drags in other unrelated laws (copyright, patent, trade secret, publicity rights and more) that have nothing to do with the issue.

See http://www.gnu.org/philosophy/not-ipr.html for more explanation.

Avoiding this confusion is as easy as pie: just remember not to use the term "IP" (except when you mean "internet protocol"). In fact, you have to go out of your way to cause the confusion. Too bad so many writers go out of their way.