Unless you're a member of the retro-gaming community, you probably never think about the SNES anymore. And yet, Nintendo is battling the EU over that very console all the way into 2008, following a hefty fine the EU laid down 6 years ago. In 2002, the EU accused Nintendo of price-fixing the SNES for several years in the 1990s, and sought to penalize them for their actions. They handed them a fine of 149.1 million Euros, a fine rivaled by very few others.
The EU asserts the fine was fair, whereas Nintendo claims it was not only unfair, but outright illegal. As a result, Nintendo is refusing to pay the draconian fine. That's quite a while to wait to fight back, but is still interesting.