Barroso, Wanise B. G.; Quoniam, Luc; Gregolin, José … - In: World Patent Information 25 (2003) 1, pp. 63-69
This work addresses the relevance of establishing a Brazilian database consisting of public domain patent documents through the use of the International Patent Classification (IPC). Between 1971 and 2001, a total of 245,225 patent applications have been filed with the Brazilian Patent Office and...