Since the number of domestic trademark registrations is very large, many large enterprises cannot obtain trademark registration certificates through normal registration, so they keep the trademark declaration status, that is, it is always TM, and the trademark is rejected immediately. Then submit an application so that the product can enter the supermarket, maintain the sales status of the product, and then make mass consumers aware of the product through vigorous publicity and advertising. Obtain a trademark registration certificate through the regulation that a trademark develops distinctiveness over a long period of time.

There are also some companies whose product departments are distributed through supermarkets, and the trademark on the products is TM. Maybe the company has not applied for registration of the trademark at all, so it can only use TM all the time. Hope it helps.