If your domain name is your brand name as well, then YES, you should trademark your domain name.
The advantages of registering your brand as a Trademark are: You will get the exclusive right to use the trade mark with respect to the services provided by you.
You can prevent unauthorised use of your trade mark.
Can someone trademark my domain name?
If you trademark your domain name, you have legal protection if someone uses your trademarked name. If you register your domain names, but don’t use your website to sell your products and you don’t trademark the name, there isn’t anything you can do to stop the other company.
What is the difference between a trademark and a domain name?
Trademark is a part of Intellectual Property which provides exclusive rights to its owner while domain name is the identity for a particular website on the Internet.
How do I know if a domain is trademarked?
To search the USPTO’s trademark database, go to TESS and choose a search option. If you are searching for a name, you can use the trademark name search. If you are searching a design mark, such as a logo, you will first need to look up your design code using the USPTO’s Design Search Code Manual.
How do I permanently buy a domain name?
You cannot buy a domain name permanently. Domain name registration is done on a yearly basis. However, you can pre-pay for up to 10 years which guarantees that you will have a domain name for 10 years.
What is a trademark name?
A trademark is a brand name. A trademark or service mark includes any word, name, symbol, device, or any combination, used or intended to be used to identify and distinguish the goods/services of one seller or provider from those of others, and to indicate the source of the goods/services.