Delhi High Court has ruled that Amitabh Bachchan’s name, image, voice, and personality attributes cannot be used without his permission. This order was passed acting on a plea filed by the actor "against the world at large" seeking to protect his "name, image, voice, and personality attributes".

from Times of India https://timesofindia.indiatimes.com/entertainment/hindi/bollywood/news/amitabh-bachchans-name-voice-and-picture-cannot-be-used-without-permission-delhi-hc/articleshow/95761985.cms