What threatens the infringement of US patents?

Question

Law in IT

There is a service that uses innovation. Let's discard the idea that the idea came not only to the one who managed to file a patent, we'll just work with what we have.
What threatens the one whose site uses the patent and does not pay its owner? Moreover, the copyright holder would like to take measures to eliminate this misunderstanding.
What threatens an American citizen, and what about a foreigner? Ban in search engines, domain selection?

Answer 1

AP does not apply to ideas.

Answer 2

Suppose this question is about invention patents.
Patenting of inventions is territorial in nature. That is, infringement of a US patent is possible only on the territory of the United States, including territorial waters and airspace. Accordingly, the prosecution of the infringer of the patent is carried out in American jurisdiction. By court order, the infringer may be charged compensation for the use of someone else's invention and / or prohibited from importing goods into the United States. In addition, it should be borne in mind that the litigation itself in the United States is very expensive. It must be assumed that a site that violates a patent can be forcibly closed if its domain name belongs to US jurisdiction and / or the site is hosted by a host in the United States or the host is an American legal entity. It can be assumed