Date on which the trademark application was filed with TMO?

Dubogen was applied on 03 April 1992.

Who is the trademark proprietor?

Trademark application was filed by UNICHEM LABORATORIES.

Trademark application is filed under which trademark class?

Trademark application has been filed under following classes.
5

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 Dubogen is 570567.

Is the Trademark word, color or device mark?

Dubogen is a WORD as per IP India data.