With "leads", you mean they're prospective customers of your company?Your question isn't specific but I imagine you are perhaps worried that your company could end up getting cut out of a deal? That's not a difficult concept for a legal agreement, would be happy to suggest a way to handle it. Then there's the choice of lawyer and jurisdiction. Again, depending on where this country is, I can perhaps recommend. This could be a fairly short call depending on the other relevant information that we can discuss.