First, Dakoufu is generally a business name here, not necessarily a trademark.

Second, if the trademark meets the standards of a well-known trademark, the holder can apply to determine that others have infringed the trademark. Currently, we have no evidence that Dakoufu is a well-known trademark.

Third, well-known trademarks can be protected even if they are not in the same industry.

Fourth, the registration was not in the same area.

Fifth, in fact, this case may involve infringement by some companies, but infringement is a civil act, and the people will not take action and the officials will not investigate.