There is no doubt that substantial efforts have been effected in Mexico to improve trade mark protection, such as those contained in the 2005 amendment to the Mexican Industrial Property Law, where the possibility to obtain declarations for well-known and famous trade marks has been established. However, it is worth mentioning the potential advantages of establishing a trade mark opposition procedure (TOP) in Mexico, in order to provide the owners of registered trade marks with a legal action to prevent registration of new trade marks which may conflict with previous acquired rights.