The general rule in patent law is that each country has its own patent system. If you want damages for sales in the United States, you need a U.S. patent. If you want damages for sales in New Zealand, you need to get a New Zealand patent, and so on. A case currently before the U.S. Supreme Court threatens to disrupt this system by allowing worldwide damages for infringement of U.S. patents. Read more about EFF to Supreme Court: Don’t Turn US Patents Into Worldwide Patents
The Center for Internet and Society at Stanford Law School is a leader in the study of the law and policy around the Internet and other emerging technologies.