Company lists · Data refreshed September 2026

Top 25 International patent law firms based in the Netherlands

Name: International patent law firms based in the Netherlands
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 92 companies tracked

RevenueBase identified 92 international patent law firms headquartered in the Netherlands as of September 2026 and tracks 1,759 professional contacts across them, including 967 with verified work emails and 77 with mobile numbers. Amsterdam is the largest hub.

This list covers international patent law firms headquartered in the Netherlands, 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

92Companies

1,759Contacts tracked

967Verified emails

77Mobile numbers

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The 25 largest international patent law firms based in the Netherlands

Ranked by team size

Top 25 of 92 international patent law firms based in the Netherlands, 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	NovagraafPartial evidence	Amsterdam, NetherlandsHQ checked Sep 4, 2026	201-500	210
	“Novagraaf is an international IP consultancy firm and part of the Questel group.” Source: company website · checked Sep 4, 2026
2	NLO European Patent And Trademark AttorneysIndirect evidence	The Hague, NetherlandsHQ checked Sep 4, 2026	201-500	155
	“As one of Europe’s leading intellectual property firms, we believe in the power of innovation to drive progress.” Source: company website · checked Sep 4, 2026
3	V.O. Patents & TrademarksIndirect evidence	The Hague, NetherlandsHQ checked Sep 4, 2026	201-500	145
	“V.O.” Source: company website · checked Sep 4, 2026
4	Ep&c Patent AttorneysStrong evidence	Rijswijk, NetherlandsHQ checked Sep 4, 2026	51-200	76
	“EP & C is a law firm specialized in protecting your ideas and commercial assets by patents and designs.” Source: company website · checked Sep 4, 2026
5	Aomb Intellectual PropertyIndirect evidence	Eindhoven, NetherlandsHQ checked Sep 4, 2026	51-200	74
	“For more than 55 years, we have been committed to innovation and the protection of intellectual property.” Source: company website · checked Sep 4, 2026
6	Knijff Trademark AttorneysIndirect evidence	Lx, NetherlandsHQ checked Sep 4, 2026	51-200	63
	“Knijff Trademark Attorneys is a company specialising in the protection of trademarks, designs and company names.” Source: company website · checked Sep 4, 2026
7	Daniels Huisman N.VIndirect evidence	Almelo, NetherlandsHQ checked Sep 4, 2026	51-200	53
	“Daniels Huisman Advocaten is gevestigd in Almelo, Deventer en Enschede.” Source: company website · checked Sep 4, 2026
8	Daan Advocaten & MediatorsIndirect evidence	Arnhem, NetherlandsHQ checked Sep 4, 2026	11-50	28
	“DAAN Advocaten combineert specialistische topkwaliteit in ondernemings- en arbeidsrecht met persoonlijke en betrokken dienstverlening.” Source: company website · checked Sep 4, 2026
9	DE Vries & MetmanPartial evidence	Amsterdam, NetherlandsHQ checked Sep 4, 2026	11-50	28
	“De Vries & Metman is a leading patent attorney firm in the Netherlands.” Source: company website · checked Sep 4, 2026
10	Patentwerk B.VStrong evidence	Hertogenbosch, NetherlandsHQ checked Sep 4, 2026	11-50	22
	“Patentwerk is an internationally operating Dutch patent agency which serves both Dutch and foreign clients, including a number of international enterprises quoted on the…” Source: company website · checked Sep 4, 2026
11	LeewayPartial evidence	Dm, NetherlandsHQ checked Sep 4, 2026	11-50	21
	“Leeway is an Amsterdam-based law firm specialising in intellectual property, technology and media & entertainment and all related commercial issues and contracts.” Source: company website · checked Sep 4, 2026
12	Bingh AdvocatenIndirect evidence	Amsterdam, NetherlandsHQ checked Sep 4, 2026	11-50	18
	“BINGH Advocaten is een gespecialiseerd kantoor in het hart van Amsterdam.” Source: company website · checked Sep 4, 2026
13	DeltapatentsPartial evidence	Zl, NetherlandsHQ checked Sep 4, 2026	11-50	18
	“DeltaPatents is a full-service patent firm with more than 20 years of experience in providing patent services to our clients.” Source: company website · checked Sep 4, 2026
14	DE MerkplaatsIndirect evidence	Amsterdam, NetherlandsHQ checked Sep 4, 2026	11-50	15
	“de Merkplaats is a contemporary trademarks agency and a committed partner in the field of the protection and management of intellectual property rights.” Source: company website · checked Sep 4, 2026
15	Vriesendorp & GaadeIndirect evidence	The Hague, NetherlandsHQ checked Sep 4, 2026	11-50	13
	“Vriesendorp & Gaade is your expert for complete and personal services with respect to legally protecting your inventions, designs, trademarks and other intellectual legacy…” Source: company website · checked Sep 4, 2026
16	ABCORIndirect evidence	Leiden, NetherlandsHQ checked Sep 4, 2026	1-10	13
	“Abcor Trademark & design agency” Source: company website · checked Sep 4, 2026
17	Vondst AdvocatenIndirect evidence	Amsterdam, NetherlandsHQ checked Sep 4, 2026	11-50	12
	“Vondst is een gespecialiseerd advocatenkantoor dat zich toelegt op het intellectuele eigendomsrecht, farmaceutisch recht, IT en privacy.” Source: company website · checked Sep 4, 2026
18	DOGIOPartial evidence	Hilversum, NetherlandsHQ checked Sep 4, 2026	11-50	11
	“DOGIO stands for “De OctrooiGemachtigde bij Innovatie en Ontwikkeling”; the Patent Attorney for Innovation and Development.” Source: company website · checked Sep 4, 2026
19	Lioc Patents & TrademarksStrong evidence	Ca, NetherlandsHQ checked Sep 4, 2026	11-50	11
	“LIOC Patents & Trademarks is patent, trademark and design firm operating nationally and internationally.” Source: company website · checked Sep 4, 2026
20	Bakker & Verkuijl B.VIndirect evidence	Vb, NetherlandsHQ checked Sep 4, 2026	1-10	9
	“A strong corporate identity makes that customers recognize your trademark.” Source: company website · checked Sep 4, 2026
21	Lamsma Veldstra & Lobe AdvocatenStrong evidence	NetherlandsHQ checked Sep 4, 2026	11-50	9
	“Law practice to (international ) companies and organizations Lamsma Veldstra & Lobé Advocaten has been practising for 40 years and, by Dutch standards, is a medium-sized law firm…” Source: company website · checked Sep 4, 2026
22	Louwers Ip&tech AdvocatenIndirect evidence	NetherlandsHQ checked Sep 4, 2026	1-10	8
	“LAWYERS OF CHANGE - Louwers IP & Tech Advocaten is a no nonsense niche firm specialised in the closely intertwined fields of intellectual property & innovation, IT & IT…” Source: company website · checked Sep 4, 2026
23	Bright IP LawyersIndirect evidence	Breda, NetherlandsHQ checked Sep 4, 2026	1-10	8
	“BRIGHT ip lawyers is een nichekantoor gespecialiseerd op het gebied van intellectueel eigendom (IP).” Source: company website · checked Sep 4, 2026
24	Hortis LegalPartial evidence	Cb, NetherlandsHQ checked Sep 4, 2026	11-50	7
	“Hortis Legal (formerly known as: Hortis Holland B.V.) is a legal consultancy in the area of intellectual property law.” Source: company website · checked Sep 4, 2026
25	Patent Office LOS & StigterIndirect evidence	Amsterdam, NetherlandsHQ checked Sep 4, 2026	11-50	7
	“Octrooibureau Los & Stigter is opgericht in 1910 in Amsterdam, hetzelfde jaar waarin de Rijksoctrooiwet tot stand kwam.” Source: company website · checked Sep 4, 2026

Showing 25 of 92 international patent law firms based in the Netherlands

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International patent law firms based in the Netherlands at a glance

As of Sep 4, 2026

1-10Median size (employees)

AmsterdamLargest hub · 11 HQs

77Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Verified emails by last verification

0–30

31–60

61–90

571

90–180

338

180+

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 the Netherlands 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 Netherlands 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, 967 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.

Frequently asked

How many international patent law firms are there based in the Netherlands?

RevenueBase identified 92 international patent law firms headquartered in the Netherlands 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?

Novagraaf, headquartered in Ba, tops this list with the largest team on record.

Which city has the most international patent law firms?

Amsterdam leads with 11 headquartered companies, followed by Utrecht (6) and Eindhoven (3).

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 967 verified decision-maker contacts tracked across these 92 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.