What is a famous mark?
A Famous trademark is one that has established a strong connection, in the minds of the consumers, between a specific good or service and the source of that good or service. For example, the COCA-COLA and SONY brands have been determined to be famous marks by courts.
The owner of a famous trademark can prevent another person from using the same or similar mark for any goods or services. He will also have the right to prevent others from registering identical or similar marks for any goods or services.