Most IP attorneys that I know that work regularly with startups would be happy to sit down for 30 minutes and discuss this issue with you (free of charge). They may not be able to give you a definitive answer, but they would definitely let you know what questions to ask to arrive at it. As attorneys, we generally welcome opportunities to demonstrate our knowledge and skill, so that potential clients know that we are capable and experienced. Then, when you decide to patent (or institute a different type of IP protection plan), you will (hopefully) hire that attorney to help. So, my suggestion is to tap into your network and ask around about decent IP attorneys who might be willing to chat. Keep in mind that, just because you talk with an attorney doesn't meant they can bill you for it. Usually, you will have had to enter into an Engagement Letter or other agreement (where they tell you they are charging you) for their services before they are ethically and legally able to start charging you.