Illegal

It is illegal to use other people’s trademarks without authorization.

Using someone else’s trademark without permission will constitute infringement.

Because trademark registration is divided into multiple categories, if he only registers one category, you can use it if your industry is different from his, and you can also apply for a trademark.

The Trademark Office stipulates that similar or identical trademarks shall not be registered for trademarks of the same category.

Article 60 of the Trademark Law: Any dispute arising from any of the acts that infringe upon the exclusive right to use a registered trademark as listed in Article 57 of this Law shall be resolved through negotiation between the parties.

If they are unwilling to negotiate or cannot reach an agreement, the trademark registrant or interested party may file a lawsuit in the People's Court or request the industrial and commercial administrative department to handle the matter.