Ask HN: Startups and how to avoid intellectual property troubles?

We're in a situation where our startup is gaining some attention and we've been actively recruiting advisors, e.g. a researcher who would like to advise us in his area of expertise. While having access to the mind of great thinkers is nice, right now we don't have anything set up legally for these people. I'm sure they are under some kind of no-compete/IP contract with their employees/institutions & I'm starting to worry this might bite us later on.

Question: could the act of simply talking & sharing ideas be seen as infringing on their IP agreements?