If you have developed a brand name and logo for your company and if you want to safeguard it from being used by others, then you have to apply for trademark registration. A trademark (popularly known as brand name in layman’s language) is a visual symbol which may be a word to indicate the source of the goods, a signature, name, device, label, numerals, or combination of colours used, or services, or other articles of commerce to distinguish it from other similar goods or services originating from another.
A trademark registration provides a protection to the owner of the brand or mark by ensuring exclusive right on it or you can even authorize any other person to use your mark or brand name in return of payment. You can register your logo, brand name and tag line all three in single application. A trademark application can be made within three working days and after applying you can start using ™ symbol, but it would take at least two years for you to get a registered trademark, then you can use ® symbol.