Company lists · Data refreshed November 2026

Top 25 International patent filing services worldwide

RevenueBase identified 1,144 company matches for international patent filing services worldwide as of November 2026 and tracks 15,928 professional contacts across them, including 6,254 with verified work emails. The United States is the largest market and New Delhi the largest hub.

This list covers company matches for international patent filing services worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for international patent filing services follow the table.

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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
1,144Companies
15,928Contacts tracked
6,254Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest international patent filing services worldwide

Ranked by team size
Top 25 of 1,144 company matches for international patent filing services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchMunich, GermanyHQ recorded Nov 6, 20265,001-10,0004,264 contacts →

Exact match

“The European Patent Organisation is an intergovernmental organisation that was set up on 7 October 1977 on the basis of the European Patent Convention (EPC) signed in Munich in…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchSydney, AustraliaHQ recorded Nov 6, 2026201-500414 contacts →

Exact match

“Spruson & Ferguson is a leading provider of intellectual property (IP) services across the Asia-Pacific region, with more than 490 staff working from our offices in Bangkok…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchStockholm, SwedenHQ recorded Nov 6, 2026201-500370 contacts →

Exact match

“The Swedish Intellectual Property Office, PRV, work to protect cutting edge ideas to promote Sweden's growth and competitiveness.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchPretoria, South AfricaHQ recorded Nov 6, 2026201-500367 contacts →

Exact match

“Spoor & Fisher handles the filing, registration, prosecution and enforcement of trade marks, patents, designs and copyright.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchParis, FranceHQ recorded Nov 6, 2026201-500337 contacts →

Exact match

“Founded in 1906, Plasseraud IP is one of the leading European firms in the IP sector, and among the largest in France.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 2026201-500245 contacts →

Exact match

“Destek Patent is a multinational legal practice that provides full range intellectual property (IP) services including trademarks, patents, industrial designs, new plant varieties…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchNew York, United StatesHQ recorded Nov 6, 2026201-500243 contacts →

Exact match

“Effectual Services is a well established and fast growing patent and legal support services company having experience and expertise in providing patent and legal services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Nov 6, 2026201-500242 contacts →

Exact match

“J A Kemp is a firm packed with patent and trade mark attorneys at the top of their game, renowned for their technical excellence, human engagement and trusted advice.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchTurin, ItalyHQ recorded Nov 6, 2026201-500242 contacts →

Exact match

“Jacobacci & Partners is the largest firm in Italy, and one of the most important in Europe, specialized in the legal protection and defence of intellectual property.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchParis, FranceHQ recorded Nov 6, 2026201-500189 contacts →

Exact match

“Lavoixis a leading firm fully dedicated to IP.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-200177 contacts →

Exact match

“We are a leading European IP patent, design and trade mark firm recognised throughout the IP world for its commercial awareness and commitment to clients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchThe Hague, NetherlandsHQ recorded Nov 6, 2026201-500167 contacts →

Exact match

“As one of Europe’s leading intellectual property firms, we believe in the power of innovation to drive progress.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchMumbai, IndiaHQ recorded Nov 6, 202651-200155 contacts →

Exact match

“R K Dewan & Co was founded in 1942 by Raj Kumar Dewan.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchThe Hague, NetherlandsHQ recorded Nov 6, 2026201-500145 contacts →

Exact match

“V.O.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchAmman, JordanHQ recorded Nov 6, 2026201-500122 contacts →

Exact match

“One World Intellectual Property (OWIP) is a leading intellectual property firm in the Middle East and North Africa.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchMunich, GermanyHQ recorded Nov 6, 202651-20097 contacts →

Exact match

“From our beginnings in 1994, Brandstock Group has grown into one of the leading providers of Intellectual Property services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchAnkara, TürkiyeHQ recorded Nov 6, 202651-20094 contacts →

Exact match

“Was founded in 1964 Started serving the founders of today’s biggest holdings Now serving their third generation and expended globally along with them Established Turkey’s first…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchRome, ItalyHQ recorded Nov 6, 202651-20082 contacts →

Exact match

“We are an internationally recognised intellectual property firm specialising in the protection and enforcement of patents, trademarks, models, designs and copyrights.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchHelsinki, FinlandHQ recorded Nov 6, 202651-20081 contacts →

Exact match

“Kolster is a team of experts in intellectual property rights and IP legal services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchBrussels, BelgiumHQ recorded Nov 6, 202651-20081 contacts →

Exact match

“Valipat provides a streamlined, cost-effective solution for European Patent Validation across all jurisdictions, managing translations and filings through a coordinated end-to-end…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchTel-aviv, IsraelHQ recorded Nov 6, 202651-20076 contacts →

Exact match

“Ehrlich Group is unique in its ability to offer first class expertise in all matters concerning the protection and prosecution of intellectual property, which includes advice from…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchDenver, CO, United StatesHQ recorded Nov 6, 202651-20075 contacts →

Exact match

“Focused entirely on the worldwide protection of intellectual property rights in the United States and around the globe, few firms can match our breadth of experience and level of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchRijswijk, NetherlandsHQ recorded Nov 6, 202651-20075 contacts →

Exact match

“EP & C is a law firm specialized in protecting your ideas and commercial assets by patents and designs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchBala-cynwyd, PA, United StatesHQ recorded Nov 6, 202611-5068 contacts →

Exact match

“Sun IP is dedicated to streamlining global IP portfolio management so that you can achieve more with less.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchTokyo, JapanHQ recorded Nov 6, 2026501-1,00066 contacts →

Exact match

“SHIGA International Patent Office is one of the largest IP firms in Japan with more than 140 patent and trademark attorneys.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 1,144 international patent filing services worldwide

See the full list, filter by size, metro and specialty, and access 6,254 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

International patent filing services worldwide at a glance

As of Nov 6, 2026
39.3%Verified-email coverage
13.9Average contacts per company
1-10Median size (employees)
1.8%Largest-city concentration · New Delhi
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
653
11-50
354
51-200
85
201-500
33
501-1,000
5
5,001-10,000
1
10001+
1

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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.
Coverage
Every country. Country and city lists for international patent filing services are linked below.
What qualifies
Company records worldwide whose business descriptions match “international patent filing services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 6,254 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

International patent filing services by location

9 lists · largest first

Every International patent filing services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “international patent filing services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many international patent filing services are there worldwide?

RevenueBase identified 1,144 company matches for international patent filing services worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

European Patent Office tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most international patent filing services?

The United States leads with 188 companies, followed by India (135) and Brazil (75). Every international patent filing services list by country and city is linked on this page.

Which city has the most international patent filing services?

New Delhi leads with 21 company records, followed by London (18) and Istanbul (13).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 6,254 professional contacts with verified work emails tracked across these 1,144 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

Ready to reach these companies? Verified emails and direct dials for all 1,144 international patent filing services worldwide. Start with a free account, no credit card.

Download this list →

Related lists

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.