The Trade Marks Act,1999
34. Saving for vested rights.—
Nothing in this Act shall entitle the proprietor or a registered user of registered trade mark to interfere with or restrain the use by any person of a trade mark identical with or nearly resembling it in relation to goods or services in relation to which that person or a predecessor in title of his has continuously used that trade mark from a date prior—
(a) to the use of the first-mentioned trade mark in relation to those goods or services be the proprietor or a predecessor in title of his; or
(b) to the date of registration of the first-mentioned trade mark in respect of those goods or services in the name of the proprietor of a predecessor in title of his;
whichever is the earlier, and the Registrar shall not refuse (on such use being proved), to register the second mentioned trade mark by reason only of the registration of the first mentioned trade mark.
This section provides for protecting the vested rights, so that the proprietor of registered trade mark or a registered user cannot interfere with the use of any identical or similar mark if the person has been using the mark from an earlier date.