
2025
A new milestone in the history of the firm, which reaches 125 years, continues to be a reference in innovation and excellence, expanding its operations and being recognized by the main national and international rankings and awards.

2023
The transition to the exclusive use of 100% renewable energy was carried out at the Barra da Tijuca headquarters, reaffirming our ESG commitment, also with the recertification of ISO 14001.

2022
We obtained ISO 14001 Certification for our good environmental practices in our headquarters in Barra da Tijuca, Rio de Janeiro.

2021
We moved to a new head office in Rio de Janeiro. A modern and integrated space, with environmentally responsible architecture and a focus on employees’ quality of life.

2020
Our new office headquarters was opened in São Paulo.

2019
Dannemann Siemsen Latin America and the Madrid Protocol
Association with Dannemann Siemsen Latin America, in Montevideo, Uruguay. Accession to the Madrid Protocol

2006
Consumer Relations and Brasília
Opening of the new office in Brasília and establishment of the Consumer Relations sector.

2000
Beginning of the DSA and IDS
Dannemann Siemsen Advogados was created and, at the beginning of the following year, the Dannemann Siemsen Institute was inaugurated.

1997
New Law
The new Intellectual Property Law enters into force in Brazil, expanding activities related to the sector.

1994
The firm opens the head office of its branch in the city of São Paulo.

1988
Opening of MO 70
The Dannemann firm moves to its new head office, at Rua Marquês de Olinda, 70 – Botafogo

1983
São Paulo
The Dannemann, Siemsen, Felsberg & Borges firm appears, operating in the state of São Paulo.

1977
Accession to the PCT
Accession to the PCT – the Patent Cooperation Treaty.

1970
INPI
Creation of the National Institute of Industrial Property [Brazilian Patent and Trademark Office], a federal government agency linked to the Ministry of Development, Industry and Foreign Trade.

1964
Foundation of the ASIPI
Peter Dirk Siemsen participates in the foundation of the Inter-American Association of Intellectual Property.

1963
Foundation of the ABPI [the Brazilian Intellectual Property Association]
Peter Dirk Siemsen is one of the founders of the association that brings together companies, research institutes and universities, law firms and industrial property agents from Brazil and abroad.

1958
Beginning of DSBIM
The Dannemann Siemsen & Cia. and Luiz Ipanema Moreira firms join, forming the company Dannemann, Siemsen, Bigler & Ipanema Moreira.

1953
Dannemann, Siemsen & Cia
The company Dannemann Siemsen & Cia. is formed with partners Eduardo Dannemann, Peter Dirk Siemsen and Catherina Bigler.

1948
Foundation of the ABAPI [the Brazilian Association of Industrial Property Agents]
Eduardo Dannemann was one of the founders of the association, which is fundamental in defending the interests of Industrial Property agents in Brazil.

1947
New Times
Peter Dirk Siemsen and Catharina Bigler became employees at Eduardo Dannemann’s firm.

1933
DNPI
Creation of the National Department of Industrial Property, setting the legal requirements for the work of an IP agent.

1927
Luiz de Ipanema Moreira, an industrial property agent, joins Carl Bushmann's firm.

1900
Beginning
Foundation of Carl Buschmann's firm.
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