If the trademark registration certificate authorizes use by a new company, the copy of the trademark registration certificate should usually be stamped with the new company's official seal.

In this case, a copy of the trademark registration certificate is used as part of the authorization document to prove that the new company has the right to use the trademark. In order to ensure the legality and credibility of the document, the copy should be stamped with the official seal of the new company.

The official seal is the company's legal seal, which represents the company's authority and recognition. Stamping the official seal can show the company's recognition and authorization of the copy, increasing the credibility and legal effect of the document.

Before stamping, make sure that the content of the copy is consistent with the original trademark registration certificate, and indicate relevant information about authorized use on the copy, such as company name, authorization period, etc. At the same time, it is recommended to communicate and confirm with the Trademark Office or relevant professional organizations before using a copy of the trademark registration certificate to ensure compliance with relevant laws and regulations.

Please note that specific stamp placement requirements may vary by region and country. Therefore, before stamping a copy of the trademark registration certificate, it is recommended that you learn more about local legal requirements and policies, and seek advice from professional legal advisors or intellectual property professional institutions.

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