Company lists · Data refreshed September 2026
Top 12 Biglaw firms based in Lisboa, Portugal
RevenueBase identified 113 biglaw firms headquartered in Lisboa, Portugal as of September 2026 and tracks 2,141 professional contacts across them, including 490 with verified work emails. Across Portugal, Lisboa is the largest hub for this category.
This list covers biglaw firms headquartered in Lisboa, Portugal, 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.
The 12 largest biglaw firms based in Lisboa, Portugal
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 339 contacts → | ||||
Indirect evidence “Morais Leitão is a leading full-service law firm in Portugal, with a solid background of decades of experience.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 35 contacts → | ||||
Indirect evidence “The legal profession is much more than providing for a mere ready-to-deliver service or a standardised, automatic and repetitive service.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 15 contacts → | ||||
Indirect evidence “O escritório Castro Neto Advogados tem como objectivo ser um parceiro activo, sólido e de confiança na defesa dos interesses dos seus Clientes, na optimização do desenvolvimento…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 14 contacts → | ||||
Indirect evidence “Constituída no início de 2012 e sendo um escritório especializado na advocacia de negócios e empresarial.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 13 contacts → | ||||
Indirect evidence “Founded in the 1950’s, the law firm MG Advogados is located in Avenida Fontes Pereira de Melo, one of the main roads in Lisbon.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 12 contacts → | ||||
Indirect evidence “Clareira Legal - Uma mudança de nome que traduz a cultura do nosso escritório.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 12 contacts → | ||||
Indirect evidence “Sofia Leite Borges & Associados Sociedade de Advogados SP RL (SLB & A) is a law firm founded in february 2016 specialized in Banking, Finance, Capital Markets, Private Equity…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 12 contacts → | ||||
Indirect evidence “By unifying the experience of the firm’s founding partner – practicing since 1982 – with the new methods of viewing law and legal practice, and by having the previous structure of…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 11 contacts → | ||||
Indirect evidence “Fundada em Lisboa, em 1989.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 10 contacts → | ||||
Indirect evidence “We are a multicultural law firm focused on our clients' needs, quick on our responses and committed to the excellence of our services.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 9 contacts → | ||||
Indirect evidence “A EFCM é uma sociedade de Advogados, com sede em Lisboa, e escritórios no Porto e em Mirandela, que reúne Advogados e Advogadas especialistas e especializados nas mais diversas…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 8 contacts → | ||||
Indirect evidence “Somos uma sociedade que acredita que a experiência, bem como o empenho e compromisso que colocamos em tudo o que fazemos, apenas tem valor se e na medida em que pudermos servir os…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: biglaw firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names biglaw firms.
- Partial evidence
- Its own public description names part of biglaw firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name biglaw firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 12 of 113 biglaw firms based in Lisboa, Portugal
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Biglaw firms based in Lisboa, Portugal at a glance
As of Sep 28, 2026Companies by employee count
Email recency for this list is measured across the whole Portugal list rather than for Lisboa, so it is reported there. Company counts and contact totals on this page are exact for Lisboa, over 113 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 biglaw firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Lisboa, Portugal whose own description of what they do matches “biglaw firms”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names biglaw firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among biglaw firms, and records with no verified work email. Companies headquartered outside Lisboa 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 its RevenueBase Smart Search 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, 490 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 28, 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.
Biglaw firms by metro in Portugal
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names biglaw firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many biglaw firms are there based in Lisboa, Portugal?
RevenueBase identified 113 biglaw firms headquartered in Lisboa, Portugal 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?
Morais Leitão, headquartered in Lisboa, tops this list with the largest team on record.
Which city in Portugal has the most biglaw firms?
Lisboa leads Portugal with 113 headquartered companies, followed by Porto (47) and Lisbon (33).
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 490 verified decision-maker contacts tracked across these 113 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 28, 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 Smart Search, 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.