The process of extending China's invention patents to Hongkong is as follows:
The first-stage registration shall be conducted within 6 months after the publication of the application for a patent for invention in China;
The second stage of registration shall be carried out within 6 months after the announcement of China invention patent authorization.
Information needed to extend China's invention patent to Hongkong: complete set of information needed to apply for China patent and English names and addresses of the applicant and inventor.
If you want to know more about the extension of China's invention patents to Hongkong, please have a private chat.