Many aspects of your brand image can be registered as a trademark. The aspect you need to consider is which aspect of your brand stands out to your customers. Pick that aspect(s) for registering.
1. Name
a. Product Name: You can register a particular product’s name as a trademark. Apple’s iPod is a product name trademark.
b. Business Name: Registering a company name as a trademark is the most common route businesses take. Ex: Bajaj.
c. Person’s Name/Surname: If your name plays an important part in generating revenue, then you can even trademark your name! Ex: Shah Rukh Khan has trademarked his name.
d. Abbreviations: Abbreviations of a company or brand name can also be a trademark. Ex: BMW.
2. Logo/Symbol
It is highly recommended to trademark a logo because it visually represents your brand. Your customers can recollect a logo faster than a name. A great example of a logo trademark is the ‘swoosh’ of Nike.
3. Tagline
If you have a tagline for your brand, you can go ahead and trademark that as well. A tagline tells your customers what you stand for as a business. For example, KFC’s ‘It’s finger lickin’ good’.
4. Other Options
a. Colour Mark: You can trademark a colour or a combination of colours. (Ex: Cadbury has trademarked the colour royal blue)
b. Sound Mark: Musical notes or sounds can be trademarked if we can prove that it’s distinctive. Nokia has trademarked its tune.
c. Scent Mark: Even scents can be trademarked.