Company lists · Data refreshed September 2026

Top 25 Utility patent firms based in the United Kingdom

Name: Utility patent firms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 166 companies tracked

RevenueBase identified 166 utility patent firms headquartered in the United Kingdom as of September 2026 and tracks 6,331 professional contacts across them, including 3,938 with verified work emails. London is the largest hub.

This list covers utility patent firms headquartered in the United Kingdom, 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 22, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 22, 2026 86% judged on-target in blind review

166Companies

6,331Contacts tracked

3,938Verified emails

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The 25 largest utility patent firms based in the United Kingdom

Ranked by team size

Top 25 of 166 utility patent firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to utility patent firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	ROUSE	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	501-1,000	584 contacts →
	Indirect evidence “Rouse was established in the UK in 1990 and is recognised as a global intellectual property (IP) leader operating as a collaborative network with more than people working out of…” Source: RevenueBase Database · checked Sep 22, 2026
2	Marks & Clerk	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	501-1,000	573 contacts →
	Indirect evidence “We’re true specialists – focusing on IP and IP alone.” Source: RevenueBase Database · checked Sep 22, 2026
3	HGF Limited	Indirect evidence	Leeds, United KingdomHQ checked Sep 22, 2026	201-500	538 contacts →
	Indirect evidence “HGF is one of Europe’s largest firms of Intellectual Property specialists.” Source: RevenueBase Database · checked Sep 22, 2026
4	Mewburn Ellis	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	201-500	319 contacts →
	Indirect evidence “Mewburn Ellis is the forward-looking IP firm.” Source: RevenueBase Database · checked Sep 22, 2026
5	Murgitroyd	Indirect evidence	Glasgow, United KingdomHQ checked Sep 22, 2026	201-500	298 contacts →
	Indirect evidence “Your innovations move the world forward – but great work needs solid foundations.” Source: RevenueBase Database · checked Sep 22, 2026
6	Kilburn & Strode	Indirect evidence	84 Theobalds Road, United KingdomHQ checked Sep 22, 2026	201-500	241 contacts →
	Indirect evidence “At Kilburn & Strode, we work collegiately as a firm, pooling our knowledge and experience, and collaboratively with our clients to achieve their goals.” Source: RevenueBase Database · checked Sep 22, 2026
7	DEHNS	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	201-500	229 contacts →
	Indirect evidence “Founded in 1920, Dehns is one of Europe’s largest full service intellectual property firms, with offices in London, Munich, Oslo, Oxford, Bristol, Brighton, Manchester and…” Source: RevenueBase Database · checked Sep 22, 2026
8	EIP	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	201-500	223 contacts →
	Indirect evidence “EIP is a leading intellectual property law firm, trusted by businesses worldwide to turn innovation into competitive advantage.” Source: RevenueBase Database · checked Sep 22, 2026
9	J A Kemp	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	201-500	220 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 22, 2026
10	Potter Clarkson	Indirect evidence	Nottingham, United KingdomHQ checked Sep 22, 2026	201-500	210 contacts →
	Indirect evidence “Ideas evolve.” Source: RevenueBase Database · checked Sep 22, 2026
11	Withers & Rogers	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	51-200	184 contacts →
	Partial evidence “Withers & Rogers LLP is a leading UK and European firm of patent and trade mark attorneys.” Source: RevenueBase Database · checked Sep 22, 2026
12	Appleyard Lees IP LLP	Partial evidence	Halifax, United KingdomHQ checked Sep 22, 2026	51-200	167 contacts →
	Partial evidence “Appleyard Lees is a leading intellectual property law firm, with over eighty patent and trade mark attorneys and litigators.” Source: RevenueBase Database · checked Sep 22, 2026
13	Reddie & Grose Patent And Trade Mark Attorneys	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	201-500	149 contacts →
	Indirect evidence “Reddie & Grose is a firm of European and UK intellectual property attorneys with a highly experienced and friendly team.” Source: RevenueBase Database · checked Sep 22, 2026
14	Johnsons	Partial evidence	Edinburgh, United KingdomHQ checked Sep 22, 2026	11-50	145 contacts →
	Partial evidence “Chartered Patent Attorneys, European Patent Attorneys, Trade Mark Attorneys.” Source: RevenueBase Database · checked Sep 22, 2026
15	Gill Jennings & Every LLP	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	51-200	114 contacts →
	Partial evidence “Gill Jennings & Every LLP is a leading firm of European Patent and Trade Mark Attorneys with offices in London and Munich.” Source: RevenueBase Database · checked Sep 22, 2026
16	Abel Imray	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	51-200	102 contacts →
	Partial evidence “At Abel + Imray, we blend legal experience with commercial awareness to advise and represent our clients on all aspects of patent, trade mark, and design law in the UK, Europe and…” Source: RevenueBase Database · checked Sep 22, 2026
17	Powell Gilbert	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	51-200	70 contacts →
	Indirect evidence “Powell Gilbert is a boutique law firm dedicated to IP and to serving knowledge, technology and brands based industries.” Source: RevenueBase Database · checked Sep 22, 2026
18	Page White Farrer	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	51-200	61 contacts →
	Indirect evidence “All our practitioners focus on particular technologies or IP disciplines to provide you with a winning combination of technical knowledge, business acumen and a sound appreciation…” Source: RevenueBase Database · checked Sep 22, 2026
19	Wilson Gunn Patent & Trade Mark Attorneys	Partial evidence	Manchester, United KingdomHQ checked Sep 22, 2026	51-200	52 contacts →
	Partial evidence “Wilson Gunn is a leading UK firm of patent and trade mark attorneys, with offices in Manchester, Birmingham, Liverpool, Chesterfield, London and Glasgow.” Source: RevenueBase Database · checked Sep 22, 2026
20	Cleveland Scott York	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	51-200	46 contacts →
	Indirect evidence “Cleveland Scott York is one of Europe’s leading intellectual property firms.” Source: RevenueBase Database · checked Sep 22, 2026
21	Stratagem IPM Limited	Indirect evidence	Toft, United KingdomHQ checked Sep 22, 2026	51-200	46 contacts →
	Indirect evidence “EMPOWERING YOUR BUSINESS WITH THE RIGHT IP SOLUTION At Stratagem, we’ve been helping businesses turn ideas into assets since Our vision is simple: a future where intellectual…” Source: RevenueBase Database · checked Sep 22, 2026
22	Mintz, Levin, Cohn, Ferris, Glovsky And Popeo, P.C	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	201-500	46 contacts →
	Indirect evidence “MINTZ, LEVIN, COHN, FERRIS, GLOVSKY AND POPEO LLP is a company based out of NEW BROAD STREET HOUSE 35 NEW BROAD STREET, LONDON, United Kingdom.” Source: RevenueBase Database · checked Sep 22, 2026
23	Greenhalgh Kerr Solicitors	Indirect evidence	Wigan, United KingdomHQ checked Sep 22, 2026	11-50	44 contacts →
	Indirect evidence “Greenhalgh Kerr are an award-winning niche litigation solicitors practice based in Wigan, Greater Manchester.” Source: RevenueBase Database · checked Sep 22, 2026
24	Slingsby Partners LLP	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	51-200	44 contacts →
	Indirect evidence “We help technology companies protect and commercialise their intellectual property across the UK and Europe.” Source: RevenueBase Database · checked Sep 22, 2026
25	Beck Greener LLP	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	51-200	43 contacts →
	Partial evidence “A specialist firm of patent attorneys, trade mark attorneys, design attorneys & IP litigators, Beck Greener has offices in London and close to the EUIPO in Alicante.” Source: RevenueBase Database · checked Sep 22, 2026

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: utility patent 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 utility patent firms.
Partial evidence: Its own public description names part of utility patent firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name utility patent 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 25 of 166 utility patent firms based in the United Kingdom

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Utility patent firms based in the United Kingdom at a glance

As of Sep 22, 2026

62.2%Verified-email coverage

38.1Average contacts per company

11-50Median size (employees)

34.3%Largest-city concentration · London

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 166 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 utility patent 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 the United Kingdom whose own description of what they do matches “utility patent 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 utility patent 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 utility patent firms, and records with no verified work email. Companies headquartered outside United Kingdom 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, 3,938 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 22, 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.

Utility patent firms by metro

Utility patent firms in London57

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 utility patent 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 utility patent firms are there based in the United Kingdom?

RevenueBase identified 166 utility patent firms headquartered in the United Kingdom 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?

ROUSE, headquartered in London, tops this list with the largest team on record.

Which city has the most utility patent firms?

London leads with 57 headquartered companies, followed by Glasgow (7) and Leeds (6).

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 3,938 verified decision-maker contacts tracked across these 166 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 22, 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.