When a Trademark application is approved by the Registrar, it is kept open for the general public for opposition from them. The Trademark opposition can be filed by any person or business entity if registering the mark would be unfair for them.
Documents Required or Checklist to File a Trademark Opposition:
1. A complete application/petition indicating the reason for opposition.
2. Grounds of opposition
3. Evidence which proves that the said TM if registered would be unfair for them.