If you are considering registering a logo trademark, you may have come across a recommendation to submit a black-and-white version of the logo. This is so that the trademark covers various colour versions of the logo.
However, we have to point out that this recommendation varies from jurisdiction to jurisdiction, and different IP offices approach the question of colour as a distinct identifier differently.
In the US, Canada, Australia and New Zealand, it is generally recommended to submit the logo in black and white. However, in the EU or the UK, registering the trademark in black and white doesn't automatically protect different colour combinations. Here, it's generally advised to submit the colour version primarily used in connection with the goods or services the trademark is intended for.