First of all, trademark objections can only be filed by interested parties and prior rights holders. Generally speaking, there are two situations in which objection applications will not be accepted:

One is because of lack of qualifications, and That is to say, you may not be the prior right holder or an interested party. Therefore, your objection application will not be accepted.

Second, the evidence and reasons you provided are not sufficient, and the Trademark Office cannot verify the authenticity of the evidence and reasons you provided.

I hope it can help you, and I hope you will adopt it, thank you!