To file a trademark, you must follow a structured legal process. First, conduct a trademark search to confirm that your chosen brand name, logo, or design is not already registered. Next, prepare and file an application with the Trademark Registry through the official IP India portal or via a trademark attorney. The application should include applicant details, trademark representation, and the appropriate class of goods or services. After filing, the application is examined by the Registrar, published for opposition, and if no objections arise, the trademark is granted. Registration provides exclusive rights and protection for ten years, renewable indefinitely.