After an application for a patent for invention is filed, it shall be regarded as a circuit.

There are many reasons why a patent application is considered withdrawn. In order to explain the reasons more clearly, we take an application for a patent for invention as an example to explain why a patent application may be regarded as withdrawn at different stages of examination and approval. The reasons why a patent application is considered withdrawn at the preliminary examination stage are: (1) Failing to pay the patent application fee and printing fee on schedule; ? (2) Failing to reply to the examiner's rectification notice on schedule; ? (3) Failing to pay the maintenance fee and late payment fee for the first year (i.e. the third year) on schedule; ? (4) Failing to submit the substantive examination request and pay the substantive examination fee on schedule (within 3 years from the date of application). The reasons why the patent application enters the substantive examination stage are considered to be withdrawn: (1) failed to reply to the examiner's notice of examination opinions on time; (2) Failure to pay maintenance fees and late fees on schedule. After the patent application is regarded as withdrawn, if the applicant does not want to lose the patent application, he should go through the restoration procedures in time during the recovery period, and don't miss the opportunity to go through the restoration procedures because he is too busy presenting his opinions to the Patent Office. If the applicant thinks that it is not his own fault and is deemed to have withdrawn, he should also go through the restoration procedures first and then state his opinions to the Patent Office. If it is really the fault of the patent office, the patent office will refund the repair fee to the applicant. ? Applicants should pay special attention to the time of paying maintenance fees, because there is a late payment period for maintenance fees. Once a patent application is deemed to have been withdrawn because it fails to pay the maintenance fee and late payment fee on time, the patent application will not be resumed. After the patent application is authorized, the patent right will be terminated and lost if the annual fee is not paid on time. If the applicant fails to go through the registration formalities before authorization, it shall also be deemed as giving up the right to obtain the patent right. ? For more information, please visit www.fayixing.com.