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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