Hello, according to Article 57 of the "Trademark Law of the People's Republic of China", any of the following acts is an infringement of the exclusive right to register a trademark:

( 5) Without the consent of the trademark registrant, change the registered trademark and put the goods with the changed trademark into the market again;

If you put the goods with the changed trademark into the market for sale, refer to this point, You can be sure that what you do infringes on someone else's trademark rights. If the other party has voluntarily filed a lawsuit in the People's Court or complained to the industrial and commercial administration, the industrial and commercial administration may also take the initiative to investigate and deal with trademark infringement in accordance with its authority.

But if you just change the brand and enjoy it for yourself without putting it into the market, then your behavior does not constitute infringement.

In accordance with the provisions of Article 4 of the Trademark Law of the People's Republic of China, natural persons engaged in the production, manufacturing, processing, selection, distribution of goods or provision of services who need to obtain the exclusive right to use a trademark shall Apply for trademark registration to the Trademark Office. When handling trademark registration, transfer and other application matters in the name of a natural person, in addition to submitting the "Trademark Registration Application", trademark drawings and other materials in accordance with relevant regulations. I hope my answer is helpful to you and I hope you will adopt it. Thank you. If you have more questions about trademarks, you can send me a private message!