A patent is valid for a period of 75 years from the date it is issued by the U.S. Patent Office.

Name: A patent is valid for a period of 75 years from the date it is issued by the U.S. Patent Office.
Brand: Quizplus
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Question

Quizplus · Accepted Answer

A patent is valid for a period of 20 years from the date of filing of the patent application, or in the case of certain types of patents, 15 years from the date of issue. After that period, the invention falls into the public domain and can be used by anyone without permission or payment to the inventor.

A Patent Is Valid for a Period of 75 Years