Can patents five years ago be used as application materials for high-level recognition?

* * Yes * *, patents five years ago can be used as application materials for high certification. However, it should be noted that different types of patents have different validity periods. Generally speaking, the validity period of an invention patent is 20 years. Invention patents can be used as application materials as long as they are within the validity period. Utility model patents and software works must be obtained within the last three years. Therefore, when preparing to apply for high certification, it is necessary to decide whether to use the patent five years ago according to the specific type and validity period of the patent.