Dannemann Siemsen

Rio de Janeiro - RJ Office

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Managing Partners: Peter Dirk Siemsen, Luiz Henrique O. do Amaral, Gustavo de Freitas Morais, Peter Eduardo Siemsen, Joaquim Eugenio Goulart, Attilio Gorini

Senior Partner: Luiz Henrique O. do Amaral

Number of partners: 72

Number of other lawyers: 240

Languages:Chinese, English, French, German, Italian, Japanese, Portuguese, Spanish

With 120 years’ experience, Dannemann Siemsen assists national and international clients in the advisory area and in strategic lawsuits of a civil/business nature, acting in various fields of law. The firm’s successful trajectory has been guided by a strong social commitment, which includes investments in inclusion projects, policies to promote diversity and sustainable practices.

Among over 800 employees in its offices, the firm assembles teams of highly trained multidisciplinary professionals with solid academic backgrounds, which allows it to develop innovative and creative solutions for each case. The team has extensive experience before all Brazilian courts and public bodies, including developing approaches that are frequently cited by the higher courts. The professionals’ work is also constantly endorsed in court rulings. The firm acts in repetitive cases to complex lawsuits, valuing, whenever possible, alternative means of dispute resolution, such as mediation and arbitration.

In addition to being leaders in Intellectual Property in Latin America, the firm is a reference standard in litigation and in the area of legal advice.


Intellectual Property: With a team of professionals recognised nationally and internationally, the firm is a reference point in IP law for offering a first-rate service in patent filings, trademark registrations, design protection, copyright, trade secrets and in the entire process of software registration. The firm’s experience allows it to develop the most comprehensive strategies in the protection of patents, from the first application to opposition after granting, ensuring the best legal backing supported by a multidisciplinar team of electrical, electronic, mechanical, chemical and telecommunications engineers, pharmacists and biologists, among others. Through the sector dedicated to the protection of trademarks, the firm also advises clients from searches to appeals, with a strategic thinking for trademark portfolio management and supervision structures, including on digital media, with constant monitoring of the changes in INPI’s internal regulations and administrative decisions.

Litigation: Dannemann Siemsen is a heavyweight litigation firm, representing multinational and national companies and individuals in all fields of industry. It has a large and multidisciplinary team of partners and attorneys, with long and valuable experience before all levels of the Brazilian courts and public agencies. The team of young and talented lawyers also build up a modern view to work hard in disruptive cases. The firm’s rate of success is extremely high from the most simple case, to complex matters, not only in court actions, but also in alternative dispute resolutions (mostly arbitrations and mediations), class actions, regulatory and administrative proceedings. To highlight some of the dedicated teams the firm can mention its strong intellectual Property group of litigators and technicians, working side by side in the most important IP leading cases in the country. The firm developed exclusive teams handling with contractual, franchise, real-state, corporate, consumer protection law, telecom, civil law, environmental law and tax litigations. The major differential of its professionals are availability, adaptability, quality and focus on each client, in order to provide the best counselling and to reach the most favorable results.

Consumer Relations: This consumer relations area arose from a growing demand from companies for an intelligent management and structured handling of mass litigation. The firm starts from a strategic vision of prevention in consumer relations and mediation between companies and consumers, with a focus on the preservation of the image and brand of clients with their public. In tune with the main innovations in this sector, the firm offers a differentiated service for clients, with the automation of lawsuits and the capture of demand in the distribution and flow of administrative control in the consultative, judicial litigation, administrative Litigation and business prevention areas.

Contracts: The firm is a reference point in the area of licensing agreements for intellectual property, the purchasing of technological knowledge and franchises, which need to be annotated at INPI to allow the remittance of remuneration to the foreign party, qualify the licensee for tax deduction of the amounts paid and produce effects for third parties. The firm’s lawyers assist the client from the start of negotiations, preparation and/or analysis of the agreement, until the actual execution, evaluating all aspects of the negotiation until all the necessary governmental authorisations.

Law & Technology: Computer programs fit into the concept of intellectual works and are subject to copyright protection. The protection afforded by Brazilian legislation to software is international in scope, including all countries that are signatories to the Berne Convention. The firm’s specialised team advises clients throughout the registration process at the BPTO, including the preparation of the formal documentation, selection of the technical data required, monitoring of the process until the issue and confirmation of the Registration Certificate, as well as the verification of the legal instruments related to the development and creation of the program, such as employment contracts and service agreements.

Environmental Law: The firm offers specialised advice on a wide range of topics involving environmental law, providing preventive and resolving legal advice for domestic and foreign clients. It serves several economic segments: mining, agribusiness, oil and gas, telecoms, pharmaceutical and food, among others. The firm’s professionals in the environmental area have vast experience, with expertise also in administrative, constitutional, regulatory and urban law. Their work extends to all states and a strategic evaluation of the cases is always carried out considering the technical peculiarities of each activity and each region. In order to provide clients with broad and multidisciplinary consultancy, the environmental team works in an integrated way with the litigation, criminal and arbitration sectors of the firm. The firm is committed to providing an excellent service, seeking the resolution of environmental and regulatory contingencies in an agile and efficient manner.

Main Industrial Sectors:

The firm’s main industry sectors include food, beverages and tobacco, automotive industries, banks and capital assets, biotechnology, clubs and confederations, foreign trade, construction, pesticides, education and cultural institutions, electronics and technology, packaging, energy, entertainment and media, pharmaceutical/ life sciences, hygiene and cosmetics, inventors, industrial manufacturing, marketing and advertising, mining and steel industry, chemicals and petrochemicals, insurance, services, and information technology.