[Schiendelman]

IANAL, but I am an experienced PM and founder.

Most startups get a lot of warning before being sued, and the worst that happens to most that do get sued is that they have to shut down. Sure, if you piss off Disney they may come after you, but they'll send a cease and desist before they sue.

If you're successful enough to get noticed and sued, you're also likely to be successful enough to get a lawyer.

I'd recommend you launch. Learn everything you can about your product idea, your approach to thinking. Experiment and figure out what makes people fall off, what they really want and don't want. The vast majority of projects aren't financially successful but you DO learn a lot by shipping and getting real behavior.