Is it a special circumstance to extend the trial time if a trademark review is overdue for 6 months?

In the 2013 Trademark Law, which was promulgated in 2013, one of the provisions states that when a trademark is rejected, if the party concerned is dissatisfied, it will be confiscated. Apply to the Trademark Review and Adjudication Board for reexamination within 15 days of receiving the notice. The Trademark Review and Adjudication Board shall make a decision within nine months from the date of receipt of the application and notify the party in writing that under special circumstances, you may apply for a three-month extension. However, I The company’s trademark reexamination request was submitted on December 6, 2013. The official website shows that the materials have been received. Why, as of today, there has been no result on the trademark review. According to the provisions of the Trademark Law, a result must be obtained within one year. Now it has expired. It has been nearly half a year, and I want to know how to explain such a thing

Some cases need to extend the trial time due to special circumstances.