On the 1st of June our founding partner Prof. Dr. Gerd Willi Rothmann presented a lecture on the XIII National Symposium of Constitutional Law promoted by Brazilian Academy of Constitutional Law with the theme “The multiple unconstitutionality of tax on industrialized products incidence on the resale of imported products”. The symposium took place at Grande Auditório do Teatro Guaíra at Curitiba city, state of Paraná, Brazil.