Dannemann Siemsen Advogados

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With 120 years of 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. In addition to being a leader in Intellectual Property in Latin America, Dannemann Siemsen is a reference standard in strategic litigation and in the area of legal advice.

Among over 800 employees in Dannemann Siemsen’s offices in Rio de Janeiro, São Paulo, Brasília and a partnership in Montevideo, Uruguay, the firm assembles teams of highly trained multidisciplinary professionals with solid academic backgrounds, which allows the firm to develop innovative and creative solutions for each case. Its team of lawyers has extensive experience before all Brazilian courts and public bodies, including developing approaches that are frequently cited by the higher courts.

The firm acts in repetitive cases to complex lawsuits, valuing, whenever possible, alternative means of dispute resolution, such as mediation and arbitration.


Intellectual Property:

Patents, Trademarks, Industrial Design, Copyright, Entertainment, Trade Secrets and Geographical Indications;


Intellectual Property, Civil and Business, Arbitration, Criminal, Mediation and Judicial and Extrajudicial Reorganisation;

Consumer Relations:

Advisory, Judicial Litigation, Administrative Litigation and Business Prevention;


Intellectual Property Agreements, Commercial Agreements and Franchises

Law and Technology:

Privacy and Data Protection, Blockchain and Smart Contracts, Software and New Technologies Regulation;

Environmental Law:

Environmental Litigation, Environmental Arbitration and other methods of alternative dispute resolution, Administrative procedures, Environmental Licensing and Environmental Consultancy;

Other areas:

Advertising Law, Regulatory Law, Corporate Law, Tax Law, Compliance and Internal Investigations, and Evaluation of Intellectual Assets.


Luiz Henrique O. do Amaral Senior Partner

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