In Brazil, trademark ownership is obtained through legal registration, which grants the trademark owner the right to use it throughout the Brazilian territory. According to regulations, the basis for filing an opposition is a prior trademark application or registration. However, a trademark that is well known in its field of business, regardless of whether it has been previously applied for or registered in Brazil (under Article 126 of the Brazilian Industrial Property Code and Article 6 of the Paris Convention), enjoys special protection. Therefore, as long as evidence is submitted to prove that the trademark is well-known in Brazil (and not just abroad), an opposition can be filed regardless of whether an application has been filed with the BPTO, which is an exception to the territoriality principle. Nonetheless, the trademark application must still be filed within 60 days of the filing of the opposition.