The process of correcting the invalid trademark registration mainly includes the following steps:

1. Notify the invalid application: When someone thinks that the registered trademark is invalid, they can file an invalid application with the relevant trademark registration agency or the Patent and Trademark Office. Invalid applications usually need to provide detailed reasons and evidence to support invalid claims.

2. Acceptance and examination: The trademark registration agency or the Patent and Trademark Office will accept the invalid application and examine it. They will evaluate the reasons and evidence put forward by the applicant and communicate with the trademark registration holders.

3. Notice of correction: If the trademark registration authority or the Patent and Trademark Office thinks that the invalid application is reasonable, they will send a notice of correction to the trademark registration holder. The notice of correction will indicate the reasons for the invalid application and require the trademark registration holder to respond or take corresponding measures within a certain period of time.

4. trademark registrant's response: the trademark registrant should respond to the notice of correction within the specified time limit. They can provide relevant evidence and arguments to refute the invalid application and explain the validity of the trademark.

5. Decisions and appeals: The trademark registration authority or the Patent and Trademark Office will consider the response of the trademark registration holder and the evidence provided by the invalid applicant. In the end, they will make a decision to determine whether the trademark is invalid. If either party is not satisfied with the decision, they can lodge a complaint according to relevant legal procedures.

please note that the process of correcting invalid trademark registration may vary from country to country. The above process is only a general description and does not apply to all jurisdictions. It is suggested that when faced with the problem of invalid trademark registration, consult a professional trademark agency or lawyer to understand the specific process and requirements applicable to your situation.

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