[chillycurve]

Directors and Officers insurance would provide some measure of comfort. What you need is an insurance broker who can advise you on what coverages will protect you best.

Edit: Looks like Intellectual Property Insurance is exactly what you are looking for.

[throwaway2016a]

I just googled "Intellectual Property Insurance" and it does (at least at first glance) look like exactly what I need. I wear I did search before doing the "Ask HN" and didn't come across that.