Which country follows a "first to invent" patent policy?

Question

Quizplus · Accepted Answer

The United States follows a "first to invent" patent policy, which means that if an inventor can prove that they invented the invention before anyone else, even if they filed for a patent later, they will be granted the patent. This is different from a "first to file" policy, where the patent is granted to the first person who files the patent application, regardless of who invented it first.

Which Country Follows a "First to Invent" Patent Policy