ovelty is the vital charasteristic of a patent application. After all, an invention cannot be considered as such when there is a legal evidence of the same technology being invented before. Most of the countries in Latin America do not require performing a national or international patent search before you apply for one.
As a consequence, legal problems may appear later on if another inventor -or designee- can proof they own the exclusive rights of your patent before you in the same jurisdiction. Prevent your application from been invalidated.