Comment by JamesPeterson

When Skype was first sold to eBay, eBay did a whoozy and made bad assumptions resulting in them buying Skype without the core IP.

This later cost them a gazillion dollars after a court process, and the whole world realized they needed to watch their backs just that little more.

I'd recommend exchanging pre-existing IP with the company for your founding stock, otherwise nobody will want to go near you.