A trademark is a symbol or word that characterizes your product or service and distinguishes it from other products or services on the market. It makes your customers recognize your product or service.
You probably know of many trademarks that you buy products from just because you recognize them. Your trademark registration gives an exclusive right: no one else has the right to use the trademark for their products or services, or in their marketing.
In India, trademarks are registered by the Controller General of Patents, Designs and Trademarks, Ministry Of Industry and Commerce, Government of India. You can register the trademark under the act named, The Trademark Act, 1999.
The registration provides the right to sue against others who try to copy your trademark. Also, no one else can use a similar trademark to the one registered by another person. Once you register a trademark, you can use an R symbol along with it, and it will be valid till 10 years from the date of registration. You can easily get a ™ within 3 days. But, to get an ®, it takes up to 2 years.
In case the trademark registration is nearing expiry date, you can always get it re-registered for another ten years.