LAWYER PROFILE

Thais Arza Monteiro

Brazil 2026

Mattos Filho

Ranked in 1 practice area

Private Pensions

Brazil

1 year ranked

About

Provided by Mattos Filho

Brazil: Industries & Sectors

Practice Areas

Insurance, Reinsurance & Private Pensions; Intellectual Property; Litigation & Arbitration.

Career

Thais has significant experience in pre-litigation and in handling complex insurance law, life sciences and intellectual property cases before the Brazilian courts. She represents insurers and reinsurers in both lawsuits and arbitrations in relation to claims involving large risks insurance, public administration, reimbursement and judicial reorganization disputes.

With a particular focus on intellectual property litigation, Thais also represents local and foreign clients in lawsuits involving the infringement of trademarks, patents, software, unfair competition and data breaches.

Thais is also the deputy leader of the France-Brazil Chamber of Commerce’s law commission.

Education

Universidade Presbiteriana Mackenzie

Bachelor of Laws

Université Paris Sud, France

Master’s Degree in Procedural Law

Languages Spoken

Portuguese;

English;

French.

Chambers Review

Provided by Chambers

Chambers Brazil: Industries & Sectors

Private Pensions - Brazil

Band 3

Individual Editorial

Thais Arza Monteiro often represents plan sponsors and closed pension entities before regulatory authorities and judicial courts. Her private pensions work includes legal opinions, submissions to Previc, litigation involving actuarial surpluses and matters related to plan migrations and sponsorship withdrawals.

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