Given the following situation. I have an app with in-app purchase. I don't live in the US and your patent is meaningless where I live, and yet I sell my app in

Given the following situation. I have an app with in-app purchase. I don't live in the US and your patent is meaningless where I live, and yet I sell my app in your country. Wonder how the legal wrangling works with that one. As a lot of people will be in this situation.