Trademark office publishes all the approved trademark in its official gazette for any possible opposition that could be filed with the trademark office. Trademark applicants that have access to the gazette and check it regularly to monitor the registration of the mark or subscribe for trademark monitoring services commonly object to the registration of a mark that they think is similar to theirs.
Trademark can be opposed by any person or company that has a real or legitimate interest in the registration of the mark i.e the person opposing the mark should have a real or direct interest in the registration of the mark that is being opposed.
The opposer has to show that he owns a trademark that is confusingly similar to theirs and hence might damage the status of the brand if the mark is registered.
If you find any of the advertised trademarks to be violating any previously registered trademark on any of the relative or absolute grounds you can oppose that trademark application in front of the registrar and not directly in front of the court or IPAB (INTELLECTUAL PROPERTY APPELLATE BOARD).
A trademark opposition can be filed for various reasons but the common grounds have been listed below:
Following is the Procedure if You Oppose a Trademark: