What does it mean that an application for a patent for invention is deemed to have been withdrawn after publication?

According to the provisions of the Patent Law, after an application for a patent for invention is submitted, it must be published after a preliminary examination by the Patent Office, and it will enter the substantive examination stage after the applicant has gone through the formalities for requesting substantive examination. An application for a patent for invention that has entered the substantive examination stage may also issue a notice of examination opinions that need to be defended on the application date. To sum up, after the invention patent is published through preliminary examination, the applicant needs to go through the formalities of requesting substantive examination in time, and after being allowed to enter the substantive examination stage, the applicant may need to go through the formalities of replying to the notice of examination opinions in time. If any of the procedures is not handled according to the specified requirements, it can be regarded as giving up the application. Therefore, "deemed withdrawal after the publication of an application for a patent for invention" is caused by failing to meet one of the above provisions.