It’s definitely fake. My friend also received such a call. Then he went to that company. When he entered, he asked who had registered my trademark and showed it to him. As a result, that company The company didn't mention it at all, but asked him to immediately register other unregistered trademark categories, and kept urging him to sign the contract and pay the money. This method is commonly used by a company in Kunming named Xin, now renamed Ding Group. I heard that their company has branches in other provinces and cities, but I don’t know the specific names. But using this method, no matter how many companies are opened, they will be closed sooner or later.