The legality of the title to the trademark shall depend on how both present their case before TM authority.
What prevented you from making an objection to his application for trademark when he applied for one earlier. However, you my even now file an objection to his application for trademark if the one he applied for is your concept.
After advertisement of the trademark in the TRADEMARK Journal, a period of 4 months is provided according to section 21 of Trademark Act 1999, within which, the registration of the trademark may be opposed by any person.
This opposition proceeding can be filed only with the Registrar and cannot be taken directly either to the Court or the Appellate Board (IPAB). If the opposition is successful, the registration of the trademark will be refused. If it fails, the mark will be registered.
Any person may give a notice of opposition to the registration of a trade mark. This ‘person’ doesn’t need to have a registered trademark to file an opposition and can belong to any company, association or body of individuals, whether incorporated or not. Also, it doesn't matter if he/she has or has not any commercial or personal interest in the matter. He/she only needs to represent his/her own interest and to some extent that of the public.
A trademark gives identity to a brand; it is a recognizable sign, word, design or an expression which is used to identify the goods or services of a seller from those of others.
You may follow the procedure to register your own trademark.
Some of the benefits of registering your brand name are mentioned below:
Public notice of your claim of ownership of the mark
Listing in the IP INDIA’S online database
The right to use the ® symbol which conveys that it’s yours and warn others against using it
You will be able to sell and license your brand
It helps to protect your brand from unfair competitors who tries to use deceptively similar marks to sell their products hence decreasing your brand value, and you can prevent this by taking legal action against them.