TM is actually the English abbreviation of Trade Mark. In my country and most countries, the trademark under application is used. TM means that the trademark has been applied for but has not been successfully registered. After the registration is successful, it will be changed to R plus an outer circle. This is the English abbreviation of Registered trademark, which is the English initials of the registered trademark. In some countries in Europe, America and the United States, they do not have the habit of using R, but use TM. So if you see the American trademark is tm, it does not necessarily mean that Need for Speed ??Plants vs. Zombies and other software have not been registered yet.

Trademark scholar Consultant Chen