Size :
The size of the representation of the trade mark should, where practicable, be no larger than 8cm x 8cm.
Colour :
If the applicant is claiming a combination of colours, as applied to the goods or their packaging or as used in relation to their services, as a trade mark, they should claim this by identifying the trade mark as a colour trade mark on the application form. The exact description of the colour combination as well as supplying a graphical representation of the trade mark, the applicant must also provide a concise and accurate description of the trade mark on the application. The description, which should state precisely what the mark consists of and how the description relates to the representation, will be entered as an endorsement of the registration and will thereby help define the scope of the registration.
Example : In case of combination of colours applied to a pharmaceutical capsule, it would be : "The trade mark consists of a maroon colour applied to one half of a capsule at one end, and a gold colour applied to the other half, as illustrated in the representation on the application"
Black and white :
Before filing a Logo Trademark or a Logo Composite Mark or Device mark, you have to decide whether you are claiming the colour of the trademark or not. If colour is not claimed, it is advisable to file a black-and-white drawing of the mark. Black and white will benefit the applicant on a longer run., e.g. changing the yellow colour from Flipkart trademark may not remove its overall impression. We would still recognize the 'f' on a shopping bag in any colour. For this reason, it is common for trademark applicants to register their trademark in black and white or grayscale and then use the required colour scheme to maintain consistency of the brand strategy.
Do note that even if a representation of logo is submitted in black & white, applicant can still be able to use any choice of its colour for the mark in general trade or marketing.