A patent is an intellectual property right for a technical invention。 It allows you to prevent others from using your invention for commercial purposes forever。（ ）
举一反三
- giving the owner the right to (4) others from making, using, selling, offering to sell, and importing an invention for a limited period of time, in exchange for the public disclosure of the invention.
- Once a patent expires， an invention becomes common property and can then be freely used by anyone。（ ）
- Using the right hand to shake hands is a（an） （）. A: invention B: convention
- There three types of patent in China, Patent for Invention, Patent for Utility Models and Patent for .
- The definition of invention is: "Invention refers to a new technical solution suitable for practical use that is applied to the shape, structure, or combination of products "