This goodwill is the true value of the trademark, and infringement of a trademark occurs when others use a similar mark to borrow on the goodwill of a well-known mark. A business gains legal rights to protect its trademark as soon as it begins to use the mark with its products, without a need to register the trademark. However, like copyright, registration of trademarks is recommended to provide enhanced legal rights to protect trademarks against infringers. The symbol can be used to indicate a claim of trademark rights, registered or not. The should only be used where a trademark is registered.
Trade names are different from trademarks.
For example, International Business Machines Corporation is a trade name, and IBM is a trademark. There can be overlap between trade names and trademarks, as many businesses use part of their company name to identify their products. Domain names are one of the best known and most disputed elements of the internet landscape. They are not in and of themselves trademarks, though if they are used to identify particular products or services, they can become trademarks. A marketer's dream, a good domain name has given businesses the ability to give both their name and address in one short, easy to remember phrase.