Date on which the trademark application was filed with TMO?

Atoma was applied on 18 February 2016.

Who is the trademark proprietor?

Trademark application was filed by TATA MOTORS.

Trademark application is filed under which trademark class?

Trademark application has been filed under following classes.
37

Trademark application is at what stage of trademark process?

As per IP India, trademark application is on the following stage:
Registered.

What is the Listed Application ID of the Trademark?

Listed application Id of Atoma is 3189760.

Who filed the trademark on behalf of the proprietor?

Trademark attorney of the Atoma is De Penning & De Penning.

Is the Trademark word, color or device mark?

Atoma is a WORD as per IP India data.