2. Qualified in the first trial (no formal errors) (about 2 months)
3. Apply for publication and enter the actual trial (about 5-6 months) (Note: no announcement will be submitted in advance, 18 months will be published, and the actual trial will be entered in 3 years without paying the actual trial fee).
4. Substantive examination (about 2-2.5 years) (Note: if a rejection decision is received within this period, a request for reexamination may be made to the Patent Reexamination Board within 3 months from the date of receipt).
5. Certification (about 2-3 months)
6. Total duration: 2.5-3 years.
I hope I can help you, welcome to ask and hope to adopt.