The easiest way to understand the criteria for similar or identical trade marks is to look at trademarks as a common prudent person. Would this common person be confused or not. It is determined BY SIGHT as well as PHONETIC similarity of the mark, the getup, colour combination, design and artwork of the label, packing material etc.
You looked at two trade marks and you feel that a regular person can be confused with the owners of this two trademarks, that it is more likely that he will think that they belong to one owner.
Now you have to compare a list of goods and services of this two marks. Are they also similar?
Then, without a doubt, you can say that these two trademarks are similar.
The Important thing to understand is that confusion could be probable. The Registrar decides whether there is such possibility or not.
Also Read: Trademark Infringement in India
Our advice is to conduct a trademark search for the relevant classes before filling the application. This advice will help you register your trademark and avoid some legal problems in the future, such as trademark infringement.