What is Trademark?
Protection for a name or mark used in trade. Registering it is what lets you stop someone else using it.
Legal
The definition
A registered name, logo or phrase that identifies the source of goods or services.
Where it comes up
This shows up in the name availability check on this site.
Related
Questions people ask
What is Trademark?
A registered name, logo or phrase that identifies the source of goods or services. Protection for a name or mark used in trade. Registering it is what lets you stop someone else using it.