Marianna has been working with Intellectual Property since 2000. She became a partner of Montaury Pimenta Firm in 2002 and is one of the heads of the litigation department since 2011. Marianna’s experience covers all aspects of intellectual property with special emphasis on civil litigation involving trademarks, copyright, industrial designs, domain names and unfair competition & trade dress, as well as in the development and enforcement of strategies for protection and enforcement of these rights.
Marianna is highly specialized in Digital Law and Data Protection & Privacy and has solid experience in lawsuits involving IT Law related matters. Marianna has extensive experience in representing and advising clients in said fields and she has litigated representing major technology and social media companies in several Federal and State Courts across the country.
Despite being a litigator, she is recognized as a skilled negotiator managing to avoid litigation or negotiating creative agreements that are interesting for the litigating parties.
Marianna’s practices include:
- evaluation of potential litigation risks, with the aim of, whenever possible, avoiding litigation;
- collaborating with corporate departments to review, developing solutions and advising on litigation strategies;
- handling and monitoring a variety of litigation matters, across the country;
In addition to participating in international conferences and seminars as a speaker or moderator, Marianna is constantly recognized for her practice in the most renowned rankings in the area such as: WTR1000, IP Stars (including World´s TOP 250 Women in IP in 2021, 2022), Best Lawyers, Latin Lawyers and Leaders League.
Areas of Expertise
Advertising Law, Anti-Piracy Programs, Copyright and Software, Digital Law, Domain Name, Fashion Law, IP Litigation, Unfair Competition Litigation, Trade Dress Litigation.
Languages
Portuguese, English, Spanish .
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Ana Luiza Castello Brigagão has worked in the Intellectual Property Litigation area since 2022 at Montaury Pimenta, Machado and Vieira de Mello Lawyers, initially as a legal intern, and joined the firm as an attorney and partner in 2024.
She graduated in Law from the Pontifical Catholic University of Rio de Janeiro (PUC-Rio) in 2023 and is currently studying for a postgraduate degree in Intellectual Property Law at the same institution.
Her experience includes out-of-court disputes and complex litigation before national courts, including the Superior Courts, related to Intellectual Property, mainly involving trademarks, domain names, unfair competition, digital law and copyright, representing national and international clients.
Areas of Expertise
IP Litigation, Trademark Litigation, Unfair Competition Litigation, Trade Dress Litigation, Domain Names, Digital Law, Advertising Law, Fashion Law, Piracy Suppression, Copyright and Software.
Languages
Portuguese, English .
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Carolina Peyres da Silveira Cesarini is an attorney in law specializing in Digital Law, Intellectual Property, and Data Protection, providing strategic legal counsel to national and international companies, particularly in regulated and technology-driven sectors. She has extensive practical experience in both contentious and administrative matters, as well as in preventive advisory work.
Her practice is distinguished by a technical, multidisciplinary, and solution-oriented approach to complex problem-solving, covering areas as the protection of industrial and intellectual assets, implementation of compliance projects under the LGPD and GDPR, and incident response in information security.
She regularly engages with entities such as the INPI, ANPD, PROCON, and the Public Prosecutor’s Office, and handles the drafting of legal opinions, extrajudicial notifications, strategic negotiations, and the resolution of unfair competition disputes.
Carolina has solid experience in complex litigation in courts involving digital law and industrial/intellectual property, extensive work as DPO as a Service, and specialized legal support in regulatory compliance within digital environments.
She holds a postgraduate degree in Digital Law, Data Protection, and Cybersecurity from PUC-PR (Pontifical Catholic University of Paraná) and international certifications from EXIN in the Data Protection Officer track (EXIN Privacy and Data Protection Foundation and EXIN Privacy and Data Protection Practitioner).
She earned her Law degree from the Faculty of Law of Sorocaba (FADI) and is co-author of legal articles in the fields of data protection and digital compliance, published by leading legal publishers such as Revista dos Tribunais and Thomson Reuters.
Areas of Expertise
Intellectual Property, Trademarks, Unfair Competition, Fashion Law, Digital Law, Data Protection, Cybersecurity, Technology, and Strategic Advisory and Litigation.
Languages
Portuguese, English .
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Júlia Bessa Sanzi is a lawyer with solid experience in strategic civil litigation, with a focus on digital law, intellectual property, and privacy and data protection. She has been part of renowned specialized law firms, advising national and multinational companies, particularly in the technology sector.
Her experience includes handling complex lawsuits, representing clients before courts and public agencies (such as consumer protection bodies, the Public Prosecutor’s Office, and the Brazilian Data Protection Authority -ANPD), responding to information security incidents, conducting pre-litigation negotiations, and providing legal advice in developing strategies for data protection and the defense of intellectual property rights, as well as resolving disputes related to innovation and the digital environment.
She is currently pursuing a postgraduate degree in Intellectual Property Law at PUC-Rio and holds a postgraduate degree in Digital Law and Compliance from Damásio Educacional. She earned her Law degree from the Catholic University of Santos and holds an international certification as a Data Protection Officer (DPO) from EXIN.
She has published articles in important national publications such as Valor Econômico, Conjur, and Estadão, addressing topics such as digital inheritance, information security, cannabis law, and technology regulation.
Areas of Expertise
Strategic Judicial Litigation, Intellectual Property, Digital Law, Technology, Data Protection, and Cybersecurity.
Languages
Portuguese, English .
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Luísa Rivéro Foss de Oliveira joined the Intellectual Property Litigation area at Montaury Pimenta, Machado and Vieira de Mello Lawyers in 2025 as a legal intern and became a partner in 2026.
She graduated in Law from the Pontifical Catholic University of Rio de Janeiro (PUC-Rio) in 2025 and is currently studying for a postgraduate degree in Intellectual Property Law at the same institution.
With experience in Intellectual Property since 2023, her practice includes judicial proceedings and extrajudicial measures, including complex disputes before national courts, involving matters related to trademarks, domain names, unfair competition, digital law, advertising law, trade dress and copyright, representing national and international clients. Her work is distinguished by providing strategic support to clients, including the definition and implementation of legal strategies, as well as the preparation of legal opinions and risk analyses, with attention to the specificities of each case and the clients’ business objectives.
Areas of Expertise
IP Litigation, Trademark Litigation, Unfair Competition Litigation, Trade Dress Litigation, Domain Names, Digital Law, Advertising Law, Fashion Law, Piracy Suppression, Copyright and Software.
Languages
Portuguese, English, Spanish .
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