Luiz Henrique O do Amaral is both a senior partner and the managing partner at Dannemann Siemsen Advogados. He graduated as a lawyer in 1985 and is a registered intellectual property (IP) agent (patent, designs and trademark). He is also the managing partner of the industrial property firm Dannemann, Siemsen, Bigler & Ipanema Moreira. Luiz Henrique specialises in IP (trademarks, patents and copyright), franchising, licensing, unfair competition, corporate and computer law, transfer of technology, consumer protection law, and litigation (as leading litigator) in the judicial and administrative spheres in these practice areas.

Luiz Henrique is a Commander of the Order of Merit of the Labour Judiciary, awarded in 2015 by the Regional Federal Court of the 2nd Region, Rio de Janeiro Circuit; and a recipient of the 2016 Award of Merit of the International Association for the Protection of Intellectual Property (AIPPI) for his outstanding contribution to the development of IP law and practice. He is First Vice President of AIPPI and a member of the board of the Membership Council of the Brazilian Franchising Association (ABF). Luiz Henrique is also a former president and current board member of the Brazilian Intellectual Property Association (ABPI), former Secretary General, in 2009 and 2011, of the World Franchising Council (WFC) and a member of the Biotechnology Information Council (CIB) and IP counsel for that organisation. Luiz Henrique is also a mentor in IP and corporate law at the Endeavor Institute.