Brand name, company name, trademark, etc. , the principle of registration priority applies, that is to say, in general, whoever registers early will have it.

I cann't believe you used it for over a year. If the other party is registered after you use it, you can apply for cancellation of the other party after giving evidence or file a lawsuit to apply for cancellation of the other party.

If not, it will be difficult. See if you can find an acquaintance in the industrial and commercial bureau to solve it.

I hope it helps you.