Company lists · Data refreshed September 2026

Top 24 Intellectual property law firms based in the United Kingdom

Name: Intellectual property law 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 4, 2026 372 companies tracked

RevenueBase identified 372 intellectual property law firms headquartered in the United Kingdom as of September 2026 and tracks 6,945 professional contacts across them, including 4,152 with verified work emails and 402 with mobile numbers. London is the largest hub.

This list covers intellectual property law 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, 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

372Companies

6,945Contacts tracked

4,152Verified emails

402Mobile numbers

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The 24 largest intellectual property law firms based in the United Kingdom

Ranked by team size

Top 24 of 372 intellectual property law firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names intellectual property 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	Marks & ClerkIndirect evidence	London, United KingdomHQ checked Sep 4, 2026	501-1,000	568
	“We’re true specialists – focusing on IP and IP alone.” Source: company website · checked Sep 4, 2026
2	HGF LimitedStrong evidence	Leeds, United KingdomHQ checked Sep 4, 2026	201-500	541
	“HGF is one of Europe’s largest firms of Intellectual Property specialists.” Source: company website · checked Sep 4, 2026
3	Carpmaels & RansfordStrong evidence	London, United KingdomHQ checked Sep 4, 2026	201-500	282
	“Carpmaels & Ransford LLP The European Intellectual Property Firm Carpmaels & Ransford is a full-service European intellectual property firm at the forefront of a rapidly changing…” Source: company website · checked Sep 4, 2026
4	Harbottle & LewisPartial evidence	London, United KingdomHQ checked Sep 4, 2026	201-500	263
	“We are a dynamic, multifaceted law firm that provides a wide range of legal services to a creative and entrepreneurial client base.” Source: company website · checked Sep 4, 2026
5	DEHNSStrong evidence	London, United KingdomHQ checked Sep 4, 2026	201-500	231
	“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: company website · checked Sep 4, 2026
6	J A KempIndirect evidence	London, United KingdomHQ checked Sep 4, 2026	201-500	225
	“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: company website · checked Sep 4, 2026
7	Mathys & Squire LLPStrong evidence	London, United KingdomHQ checked Sep 4, 2026	201-500	199
	“Mathys & Squire is a top-tier European intellectual property (IP) law firm with 115+ years of experience supporting innovation-driven businesses.” Source: company website · checked Sep 4, 2026
8	StobbsIndirect evidence	Cambridge, United KingdomHQ checked Sep 4, 2026	51-200	192
	“Stobbs IAM blends IP expertise with a knowledge of business, a passion for brands and a practical approach to problem solving.” Source: company website · checked Sep 4, 2026
9	Venner ShipleyStrong evidence	London, United KingdomHQ checked Sep 4, 2026	201-500	189
	“Venner Shipley is a top-tier European full-service intellectual property firm, providing an innovative, bespoke service through our team of expert European and UK patent, trade…” Source: company website · checked Sep 4, 2026
10	Appleyard Lees IP LLPStrong evidence	Halifax, United KingdomHQ checked Sep 4, 2026	51-200	171
	“Appleyard Lees is a leading intellectual property law firm, with over eighty patent and trade mark attorneys and litigators.” Source: company website · checked Sep 4, 2026
11	BOULTIndirect evidence	London, United KingdomHQ checked Sep 4, 2026	51-200	166
	“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.” Source: company website · checked Sep 4, 2026
12	HLKIndirect evidence	Bristol, United KingdomHQ checked Sep 4, 2026	201-500	145
	“Covering the whole IPR Lifespan™, our full-service offering is designed to ensure that our clients have their creativity defended, advantage realised and talent rewarded.” Source: company website · checked Sep 4, 2026
13	JohnsonsIndirect evidence	Edinburgh, United KingdomHQ checked Sep 4, 2026	11-50	144
	“Chartered Patent Attorneys, European Patent Attorneys, Trade Mark Attorneys.” Source: company website · checked Sep 4, 2026
14	ClintonsPartial evidence	London, United KingdomHQ checked Sep 4, 2026	51-200	128
	“Clintons is an award winning boutique law firm, based in St Giles in central London.” Source: company website · checked Sep 4, 2026
15	Gill Jennings & Every LLPIndirect evidence	London, United KingdomHQ checked Sep 4, 2026	51-200	112
	“Gill Jennings & Every LLP is a leading firm of European Patent and Trade Mark Attorneys with offices in London and Munich.” Source: company website · checked Sep 4, 2026
16	KeltieIndirect evidence	London, United KingdomHQ checked Sep 4, 2026	51-200	110
	“Keltie is a European IP firm with a unique personality.” Source: company website · checked Sep 4, 2026
17	Maucher JenkinsStrong evidence	London, United KingdomHQ checked Sep 4, 2026	201-500	108
	“Maucher Jenkins is a pan-European intellectual property firm of UK, German and European Patent and Trade Mark Attorneys, Attorneys-at-Law and IP Litigators, uniquely placed to…” Source: company website · checked Sep 4, 2026
18	Abel ImrayPartial evidence	London, United KingdomHQ checked Sep 4, 2026	51-200	101
	“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: company website · checked Sep 4, 2026
19	LEE & Thompson LLPPartial evidence	London, United KingdomHQ checked Sep 4, 2026	51-200	97
	“Lee & Thompson is one of the UK’s leading law firms for the media, technology and creative industries.” Source: company website · checked Sep 4, 2026
20	Elkington FifeIndirect evidence	Sevenoaks, United KingdomHQ checked Sep 4, 2026	51-200	70
	“Elkington + Fife is a leading firm of patent attorneys and trade mark attorneys.” Source: company website · checked Sep 4, 2026
21	Powell GilbertPartial evidence	London, United KingdomHQ checked Sep 4, 2026	51-200	69
	“Powell Gilbert is a boutique law firm dedicated to IP and to serving knowledge, technology and brands based industries.” Source: company website · checked Sep 4, 2026
22	Page White FarrerIndirect evidence	London, United KingdomHQ checked Sep 4, 2026	51-200	61
	“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: company website · checked Sep 4, 2026
23	BrandsmithsPartial evidence	London, United KingdomHQ checked Sep 4, 2026	51-200	58
	“Brandsmiths is the UK's leading IP law firm, built for brands with offices in London and Manchester.” Source: company website · checked Sep 4, 2026
24	Peter Lynn & PartnersIndirect evidence	Swansea, United KingdomHQ checked Sep 4, 2026	11-50	53
	“Swansea based solicitors, Peter Lynn & Partners, offer a wide range of legal advice and services to individuals and businesses across South Wales.” Source: company website · checked Sep 4, 2026

Showing 24 of 372 intellectual property law firms based in the United Kingdom

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Intellectual property law firms based in the United Kingdom at a glance

As of Sep 4, 2026

1-10Median size (employees)

LondonLargest hub · 139 HQs

402Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

214

11-50

106

51-200

201-500

501-1,000

Verified emails by last verification

0–30

31–60

333

61–90

2,161

90–180

1,657

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 intellectual property 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 United Kingdom whose own description of what they do matches “intellectual property 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 intellectual property law 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 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, 4,152 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.

Intellectual property law firms by metro

Intellectual property law firms in London139

Frequently asked

How many intellectual property law firms are there based in the United Kingdom?

RevenueBase identified 372 intellectual property law 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?

Marks & Clerk, headquartered in Oxford, tops this list with the largest team on record.

Which city has the most intellectual property law firms?

London leads with 139 headquartered companies, followed by Cambridge (13) and Leeds (10).

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 4,152 verified decision-maker contacts tracked across these 372 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.