Dannemann Siemsen Advogados > Rio de Janeiro, Brazil > Firm Profile

Dannemann Siemsen Advogados
Rua Santa Luzia, 651 - 16º andar
CEP 20.021-903

Brazil > Intellectual property Tier 1

The full range of IP needs are catered for at Dannemann Siemsen Advogados, with the department regularly acting for the life sciences sector in patent infringement lawsuits and transfer technology contracts between private and public laboratories. On the patent litigation front, the group also has a notable reputation for representing agribusiness and oil and gas companies in infringement and nullity actions. Other areas of particular strength include advising automotive clients in contentious matters concerning the validity of industrial design registration. Electrical engineer and attorney Gustavo de Freitas Morais is a key contact for multinational corporations seeking assistance with patents and industrial design issues. IP litigation is a core area of activity for Luiz Amaral and Joaquim Eugenio Goulart, the latter of whom leads on this type of mandate. The firm also fields a contracts and transactions department made up of lawyers specialised in intellectual property transactions and commercial agreements. Peter Siemsen is proficient in all IP rights, technology transfers and licensing matters, while Cândida Ribeiro Caffé focuses on licensing and franchising agreements, and Attilio Gorini advises on entertainment contracts and clearance of trade marks for the audiovisual industry.

Practice head(s):

Luiz Amaral; Gustavo de Freitas Morais; Peter Siemsen; Joaquim Eugenio Goulart; Attilio Gorini

Key clients

Boehringer Ingelheim

Corteva Agroscience

Dispensing Technologies

North Carolina State University

Gsi Brasil Industria e Comercio de Equipamentos Agropecuários



Procter & Gamble

HPE do Brasil Automotores







L’oreal Brasil



Work highlights

  • Represents Boehringer Ingelheim in an invalidity action by a Brazilian generic company against a Brazilian patent, which covers linagliptin, the active ingredient in the Trajenta/Trayenta medicine.
  • Challenged the Brazilian PTO’s rejection of a BR patent application related to WideStrike cotton on behalf of Corteva Agroscience.
  • Assisted Procter & Gamble with the implementation of a new franchised business for laundry services in Brazil, preparing all necessary legal documents, in accordance with the new Brazilian Franchise Law.