2. After applying for a patent abroad, if you need to reapply at home, you can claim priority, but the time limit for foreign priority is 12 months for inventions and utility models and 6 months for designs.
3. If the priority period is exceeded and the foreign patent has been made public, it will destroy the novelty of the domestic application and make it difficult to obtain authorization.
4. If the priority period is exceeded, you can try to apply for utility model or design, because it may be authorized without substantive examination, but it is easy to be invalidated.
5. If the time limit for priority has not expired, the applicant may claim priority at the time of domestic application, and pay the priority request fee (per 80 yuan).