To resolve the situation where the trademark registrant has been cancelled, you may need to take the following steps:

1. Provide proof of cancellation: Prepare and provide documentation proving that the trademark registrant has been cancelled. This may include the trademark registrant's cancellation certificate, company dissolution certificate, personal account cancellation certificate, etc. Make sure these documents are official, legal, and prove that the trademark registrant has canceled the trademark.

2. Contact the trademark registration agency: Get in touch with the trademark registration agency and explain to them that the trademark registrant has been cancelled. You may need to submit deregistration certification documents and communicate with relevant personnel at the registration agency. They will guide you on further steps and required documents.

3. Update trademark registration information: According to the requirements of the trademark registration agency, it may be necessary to update the trademark registration information. You may need to provide new trademark registrant information, such as the name and address of the new company or individual. This will ensure the accuracy and compliance of trademark registration information.

4. Supplementary documents and procedures: According to the requirements of the trademark registration agency, other documents and procedures may be required. This may include completing a renewal application form, paying the appropriate fees, and providing other relevant supporting documentation.

5. Follow-up and confirmation: Follow up on your application and confirm that the trademark registration agency has updated the trademark registration information. Make sure you obtain an updated trademark registration certificate or other relevant documents.

Please note that specific workarounds and required documentation may vary by country or region. Therefore, it is recommended that you handle the situation where the trademark registrant has canceled according to the regulations and guidelines of the trademark registration authority in your country or region.

I hope the above answer meets your requirements. If you have additional questions, please feel free to ask.

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