How to withdraw the patent and what should the patentee do?

How to withdraw the patent and what should the patentee do? In the patent application, you may encounter a patent application. For some reason, after applying for a patent, I don't want to apply. What if the documents have been submitted? Is patent withdrawal feasible? Yes, the patentee can try to withdraw the patent. There are basically two ways to withdraw a patent. One is to take the initiative to withdraw the patent, and the other is the form in which the patentee passively does not deal with the patent. How to withdraw the patent, what the patentee should do, and the patent applicant withdraws the patent application after filing the application but before granting the patent right. There are two kinds: express and implied. Express withdrawal means that the applicant submits a written document to the Patent Office to request the withdrawal of the patent application, while implied withdrawal is mainly expressed by negative omission. For example, in countries with delayed examination system, applicants need to request substantive examination within a certain period of time (for example, within three years) from the date of application. If the applicant fails to make a request without justifiable reasons, it shall be deemed to have withdrawn the application. After substantial examination, the Patent Office considers that the application is not in conformity with the provisions of the Patent Law, and notifies the applicant to state his opinions or amend the application within a specified time limit. If the applicant fails to reply within the time limit, it shall also be deemed to have withdrawn the patent application. If the application is withdrawn before publication, you can reapply. However, if it is withdrawn after publication, the re-application will be rejected because of the loss of novelty. But why withdraw the patent application? The reasons for withdrawing the patent are roughly as follows: there is a great chance that the application for a patent for invention will not pass, or the application for a patent is a relatively simple patent, but it will cause losses to itself, or the patent application technology is relatively high-end and I don't want to disclose the specific details of the patent. It has been used as a confidential patent, and it has advantages and disadvantages not to apply for a patent, but it is afraid of disclosure; The application is guaranteed and has a time limit, and some patents are not suitable for application.