Which of the following countries has followed the rule of "first-to-invent" with respect to patent awards?

Question

Quizplus · Accepted Answer

The United States follows the rule of "first-to-invent" with respect to patent awards. This means that if two inventors claim to have invented the same invention, the one who can prove that they were the first to conceive of it and reduce it to practice will be awarded the patent. Other countries, such as Japan and many European countries, follow the rule of "first-to-file", which means that the first person to file a patent application for an invention will be awarded the patent.

Which of the Following Countries Has Followed the Rule of "First-To-Invent