Brazil was always well provided with patent laws of complex technical and legal consequence. Fourth country in the world to enact a patent law (in 1809), it was a founding member of the Paris Convention in 1882 and remained a full-fledged party to such treaty since then. Patents received Constitutional acceptance in the first Imperial Charter of 1824, and further Republican Constitutions provided for patent protection (and eventually, trademarks) in their Bill of Rights.
. See here a memo on the 1996 Industrial Property Law
. A note on the Term of Brazilian Patents under TRIPs (1997)
. Brazilian Patent Office English Page
. Text of the 1996 Industrial Property Law