Company lists · Data refreshed September 2026

Top 23 International patent law firms based in Rio De Janeiro, Brazil

Name: International patent law firms based in Rio De Janeiro, Brazil
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 40 companies tracked

RevenueBase identified 40 international patent law firms headquartered in Rio De Janeiro, Brazil as of September 2026 and tracks 1,637 professional contacts across them, including 503 with verified work emails. Sao Paulo is the largest hub.

This list covers international patent law firms headquartered in Rio De Janeiro, Brazil, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 4, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review

40Companies

1,637Contacts tracked

503Verified emails

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The 23 largest international patent law firms based in Rio De Janeiro, Brazil

Ranked by team size

Top 23 of 40 international patent law firms based in Rio De Janeiro, Brazil, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names international patent law firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Dannemann SiemsenIndirect evidence	Rio De Janeiro, BrazilHQ checked Sep 4, 2026	501-1,000	769
	“Dannemann Siemsen is a Brazilian firm dedicated to Intellectual Property since 1900.” Source: company website · checked Sep 4, 2026
2	DanielPartial evidence	Rio De Janeiro, BrazilHQ checked Sep 4, 2026	201-500	260
	“DANIEL is Brazil’s most complete and specialized law firm in Technology and Intellectual Property.” Source: company website · checked Sep 4, 2026
3	Bhering AdvogadosPartial evidence	Rio De Janeiro, BrazilHQ checked Sep 4, 2026	51-200	83
	“Bhering Advogados was founded in 1978 and practices in all fields of Intellectual Property and related matters, including trademarks, patents, industrial designs, copyright and…” Source: company website · checked Sep 4, 2026
4	Murta Goyanes AdvogadosPartial evidence	Rio De Janeiro, BrazilHQ checked Sep 4, 2026	51-200	69
	“Murta Goyanes is an Intellectual Property Law boutique firm that relies on partners with over 25 years of experience and a team with recognized credibility, capable of handling…” Source: company website · checked Sep 4, 2026
5	Luiz Leonardos & AdvogadosPartial evidence	Rio De Janeiro, BrazilHQ checked Sep 4, 2026	51-200	58
	“Our firm, Luiz Leonardos & Advogados, with 15 partners - including attorneys and patent attorneys in different fields, such as electrical and chemical engineer and biology - and…” Source: company website · checked Sep 4, 2026
6	Arrighi AdvogadosIndirect evidence	Rio De Janeiro, BrazilHQ checked Sep 4, 2026	51-200	56
	“A Arrighi Advogados, constituída há mais de 10 anos, destaca-se no mercado jurídico por sua eficiência, qualidade profissional e pelo atendimento personalizado.” Source: company website · checked Sep 4, 2026
7	Gruenbaum, Possinhas & TeixeiraIndirect evidence	Rio De Janeiro, BrazilHQ checked Sep 4, 2026	11-50	28
	“A firm committed to and driven by legal excellence since 1969.” Source: company website · checked Sep 4, 2026
8	Magellan IP Intellectual Property BrazilIndirect evidence	Rio De Janeiro, BrazilHQ checked Sep 4, 2026	11-50	28
	“We are an innovative firm providing prosecution and consulting services in all areas of intellectual property in Brazil.” Source: company website · checked Sep 4, 2026
9	Tavares Intellectual PropertyIndirect evidence	Rio De Janeiro, BrazilHQ checked Sep 4, 2026	11-50	26
	“A Tavares Propriedade Intelectual é um escritório especializado, estabelecido no Rio de Janeiro, que há mais de 36 anos oferece serviços e soluções de alta qualidade em…” Source: company website · checked Sep 4, 2026
10	VAZ E Dias Advogados & AssociadosPartial evidence	Rio De Janeiro, BrazilHQ checked Sep 4, 2026	11-50	23
	“The Law firm VAZ E DIAS ADVOGADOS & ASSOCIADOS specializes specifically in intellectual property law and our activities encompass aspects related to the protection of…” Source: company website · checked Sep 4, 2026
11	Matos & Associados - AdvogadosIndirect evidence	Rio De Janeiro, BrazilHQ checked Sep 4, 2026	11-50	16
	“O escritório, constituído em 1990, está sediado no Rio de Janeiro/RJ e possui especialização no Direito da Propriedade Intelectual, reunindo a experiência de advogados e técnicos…” Source: company website · checked Sep 4, 2026
12	Msantos Intellectual PropertyIndirect evidence	Rio De Janeiro, BrazilHQ checked Sep 4, 2026	11-50	14
	“Founded in 2016, Msantos Intellectual Property offers high-quality services in all aspects of Intellectual Property and has a highly qualified and experienced team, which can…” Source: company website · checked Sep 4, 2026
13	A&s Propriedade IntelectualIndirect evidence	Rio De Janeiro, BrazilHQ checked Sep 4, 2026	11-50	8
	“A&S Propriedade Intelectual iniciou suas atividades há mais de dez anos, fruto da união de esforços entre Francisco Carlos Rodrigues Silva, Bernardo Atem Francischetti, advogados…” Source: company website · checked Sep 4, 2026
14	Dannemann Siemsen AdvogadosIndirect evidence	Rio De Janeiro, BrazilHQ checked Sep 4, 2026	1-10	8
	Source: company website · checked Sep 4, 2026
15	ABO IPIndirect evidence	Rio De Janeiro, BrazilHQ checked Sep 4, 2026	1-10	6
	“The three founding partners of the new Intellectual Property (IP) firm have over sixty years of Brazilian IP experience between them.” Source: company website · checked Sep 4, 2026
16	Nunes & Rodrigues Advogados AssociadosIndirect evidence	Rio De Janeiro, BrazilHQ checked Sep 4, 2026	1-10	6
	“O Nunes & Rodrigues - Advogados Associados entrou no mercado para se sobrepor e oferecer um diferencial em jurisdicionalidade, atendimento, modernidade e segurança.” Source: company website · checked Sep 4, 2026
17	Santucci Propriedade IntelectualPartial evidence	Rio De Janeiro, BrazilHQ checked Sep 4, 2026	1-10	5
	“The law firm SANTUCCI specializes in Intellectual Property and benefits from the vast experience of its main partners: Elisa Santucci and Monica Adler.” Source: company website · checked Sep 4, 2026
18	Hang AdvogadosIndirect evidence	Rio De Janeiro, BrazilHQ checked Sep 4, 2026	1-10	5
	“Escritório de advocacia especializado em consultoria jurídica nacional e internacional para pessoas físicas e jurídicas.” Source: company website · checked Sep 4, 2026
19	Paula Tupinambá AdvocaciaIndirect evidence	Rio De Janeiro, BrazilHQ checked Sep 4, 2026	1-10	2
	“Somos um escritório especializado em direito da propriedade intelectual, com foco em direitos autorais na indústria do audiovisual.” Source: company website · checked Sep 4, 2026
20	Hanewald Natividade & SichelIndirect evidence	Rio De Janeiro, BrazilHQ checked Sep 4, 2026	1-10	2
	“We founded our office in order to assist players who create new technologies.” Source: company website · checked Sep 4, 2026
21	Nadia DE Araujo AdvogadosIndirect evidence	Rio De Janeiro, BrazilHQ checked Sep 4, 2026	1-10	2
	“O escritório Nadia de Araujo Advogados foi fundado com o objetivo de oferecer assessoria jurídica qualificada e especializada em direito internacional, arbitragem e mediação…” Source: company website · checked Sep 4, 2026
22	Bonini & Biron AdvogadosPartial evidence	Rio De Janeiro, BrazilHQ checked Sep 4, 2026	1-10	1
	“Boutique Intellectual Property Law Firm since 2004, with headquarters in Rio de Janeiro, Brazil.” Source: company website · checked Sep 4, 2026
23	Menezes GomesIndirect evidence	Rio De Janeiro, BrazilHQ checked Sep 4, 2026	1-10	1
	“MENEZES \| GOMES SEU ESCRITÓRIO DE PI NO BRASIL Trabalhamos em estreita colaboração com nossos clientes para desenvolver uma melhor estratégia de proteção de seus direitos de…” Source: company website · checked Sep 4, 2026

Showing 23 of 40 international patent law firms based in Rio De Janeiro, Brazil

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International patent law firms based in Rio De Janeiro, Brazil at a glance

As of Sep 4, 2026

1-10Median size (employees)

Sao PauloLargest hub · 118 HQs

Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured across the whole Brazil list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Rio De Janeiro, over 40 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among international patent law firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Rio De Janeiro, Brazil whose own description of what they do matches “international patent law firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among international patent law firms, and records with no verified work email. Companies headquartered outside Rio De Janeiro are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 503 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 4, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

International patent law firms by metro in Brazil

International patent law firms in Sao Paulo118
International patent law firms in Rio De Janeiro40
International patent law firms in Curitiba26

Frequently asked

How many international patent law firms are there based in Rio De Janeiro, Brazil?

RevenueBase identified 40 international patent law firms headquartered in Rio De Janeiro, Brazil as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Dannemann Siemsen, headquartered in Rio De Janeiro, tops this list with the largest team on record.

Which city has the most international patent law firms?

Sao Paulo leads with 118 headquartered companies, followed by Rio De Janeiro (40) and Curitiba (26).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 503 verified decision-maker contacts tracked across these 40 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 4, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.