TY - GEN T1 - Circulars concerning the Patent Cooperation Treaty. LA - eng N1 - (F/E) : French and English version; See French version in CIRCULAIRES CONCERNANT LE TRAITE DE COOPERATION EN MATIERE DE BREVETS;. ID - 16065 KW - Patents. KW - Intellectual property. KW - WIPO AND UPOV DOCUMENTS : BIRPI : PARIS UNION : PCT TI - Circulars concerning the Patent Cooperation Treaty. ER -