Trademark is registered mark that describes your service or a product.
Here are some examples of domain names that are also trademarks:
- Amazon.com (online store)
- Inforbiro.com (Information Technology and Marketing Agency)
- BlicKlik.com (Internet Marketing Network)
- FeminaPortal.com (Female Internet Portal)
A domain name isn't always a trademark. If someone use a doman name for personal site without offering any products or services but only to share his/her thoughts the domain name will not be considered as a trademark. The second example, if a domain name is consider as a generic term it cannot be a trademark, e.g. store.com is a generic term for a place where you can buy products. However, this or simillar name can become very famous but it is likely that it will not be protected as a trademark.
A trademark is any entity that distinguishes your service or product from others in the marketplace, or designates their origin. So, if you are have a e-commerce website or use the site to promote services or products the domain name is also a trademark.
For example, let's assume that someone, who already has a real shoes selling store, wants to start online shoes e-commerce website. The real store's name and the website's name do not have to be the same but they both could be considered as trademarks.