Apply for the international stage before entering the national stage. The specific steps are as follows:
(1) International stage:
1. The applicant can file a PCT international application in China National Intellectual Property Administration, China within 12 months from the filing date (priority date) of the earlier application in China, claiming the priority of China without submitting the priority certificate.
2. China National Intellectual Property Administration, China accepts patent applications as an acceptance bureau and publishes international search reports as an international search unit. The applicant may modify his patent application documents according to the above search report.
3. Internationally published patent applications. The International Bureau will publish it within 18 months from the priority date.
4. Make a request for international preliminary examination. The applicant shall file an international preliminary examination request at the same time as the application or within 19 months from the priority date, and pay the examination fee.
5. According to the international preliminary examination report issued by the international preliminary examination unit, the applicant may modify his patent application documents according to the report. ?
PCT international stage fee: the official fee for individual application is more than 3,000 yuan, and the official fee for enterprise application is about10,000 yuan. The specific fee still needs to be calculated according to the exchange rate at that time; Of course, this is only the official fee, not including the agency fee. The service fees for finding different intermediaries are different, and you need to know for yourself.
(2) National stage:
The applicant can choose a PCT member country before the expiration of 30/3 1 month from the priority date and apply for its national patent to the patent office of that country, that is, enter the national phase of that country. When the PCT international application enters the national stage, it is necessary to translate the application documents into the official language of the applicant country, and its main procedures are the same as those for patent application in China, including: application entry, publication, substantive examination, authorization and other procedures.