Any patent assignee will have to notice you in order for there to be any trouble. Getting noticed is usually a sign of "you've made it" success, and it's that

Any patent assignee will have to notice you in order for there to be any trouble. Getting noticed is usually a sign of "you've made it" success, and it's that success that should motivate you, not fear of someday making $9M instead of $10M, causing you to make $0. In a more specific fashion, patents are just like many programming environments- you can read up on them from the comfort of your laptop. Google.com/patents is a great resource. Spend a few hours over the course of a week typing in search terms related to what you're doing, and justify to yourself why each and every patent that comes up isn't doing what you're doing. (Remember, patents expire, so even if what you're doing has been invented and patented, it might be free to exploit anyway).