You can advertise without obtaining a registration certificate, but when advertising, you must be careful not to put a registered logo on the trademark, which is a circle with an "R" that we usually see. If the logo is used on goods or promotions without a registration certificate, it constitutes an illegal act of counterfeiting a registered trademark, so please be careful when using it.

Because there are risks in trademark registration, it is recommended that you do not invest too much money before you are sure that you can get the registration certificate, because once your trademark cannot be registered, your losses will be huge. Our Customers have encountered this problem before.

I hope my answer is helpful to you.