Basically, a trademark is a "brand" or "logo" that you can use to distinguish your product from those of your competitors. Through trademark registration or you can say logo registration/brand registration, you can protect your brand or logo by restricting other people from using the same. For e.g. the logo of NIKE and their tagline JUST DO IT is a registered brand name. A trademark is any unique expression related to a product or service that distinguishes it from others. A trademark can be a visual symbol, which may be a word, a name, a device, label or numerals used by a business to distinguish it from other goods of different business.
A trademark is a visual symbol, which may be a word, name, device, label or numerals used by a business to distinguish it goods or services from other similar goods or services originating from a different business. A registered trademark is an intangible asset or intellectual property for a business and is used to protect the company's investment in the brand or symbol. A trademark is registrable if it is distinctive for the goods and services you provide. Proposed trademarks that are similar or identical to an existing registered trademark cannot be registered. Also, trademarks are not registrable if it is offensive, generic, deceptive, not distinctive, contains specially protected emblems, etc.
Trademark registration enables owners to easily establish their right to the trademark in court and earn royalties. It also deters piracy and prevents similar company names from being registered by other businesses. You can conduct a trademark search, to check if your brand name clashes with existing trademarks. In India, you could get a ™ within three days, but it takes up to two years for it to be registered so that you can use the ® symbol.