Trademark Act of 1999 governs trademarks in India. A trademark is a distinctive sign used by an entity to identify its goods and services and distinguish them from others. Trademarks must be renewed every 10 years by paying a Rs. 5000 fee. Key features include helping customers identify products, indicating manufacturing source and quality, and increasing value as a business grows. Registration is not required but provides exclusive rights. The application process involves filing Form TM-1 with a Rs. 2500 fee and examination of the applied trademark. Registered trademarks receive protection from infringement and passing off by others. Violations can result in civil or criminal cases.