It usually takes 12 to 18 months to complete the change.
Trademark acceptance is proof that the Trademark Office has accepted the trademark. Generally, it takes 1 to 2 working days to submit an application to the Trademark Office and obtain an application number. After obtaining the application number, the Trademark Office will conduct a formal review. The formal review will take about 3 months, and an acceptance notice will be issued within 1 month after passing the application. The Trademark Office will then conduct a substantive examination, which will take 6 to 8 months.
If the substantive examination is passed, the Trademark Office will issue a preliminary review announcement and send it to the applicant. Three months after the announcement, the trademark registration will be approved and a formal "Trademark Registration Certificate" will be issued.