January 2010 - The original is still the 15th highest grossing movie worldwide. The franchise has taken nearly £2 billion worldwide. Ripe for reinvention, then.
Sure enough, in Jan 2010, during promotional duties on The Wolfman, Joe Johnston - who also helmed Jurassic Park 3 - confirmed plans for a reboot:
"Well, there is going to be a Jurassic Park 4. And it's going to be unlike anything you've seen. It breaks away from the first three—it's essentially the beginning of the second Jurassic Park trilogy. It's going to be done in a completely different way. That's pretty much all I can tell you."