Company lists · Data refreshed September 2026

Top 24 Software patent law firms based in London, United Kingdom

Name: Software patent law firms based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 13, 2026 97 companies tracked

RevenueBase identified 97 software patent law firms headquartered in London, United Kingdom as of September 2026 and tracks 4,969 professional contacts across them, including 2,899 with verified work emails and 249 with mobile numbers. London is the largest hub.

This list covers software patent law firms headquartered in London, 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 13, 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 13, 2026 86% judged on-target in blind review

97Companies

4,969Contacts tracked

2,899Verified emails

249Mobile numbers

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The 24 largest software patent law firms based in London, United Kingdom

Ranked by team size

Top 24 of 97 software patent law firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 13, 2026. RevenueBase Smart Search rates how each company's information relates to software patent law 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 13, 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 13, 2026
2	Marks & Clerk	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	501-1,000	573 contacts →
	Indirect evidence “We’re true specialists – focusing on IP and IP alone.” Source: RevenueBase Database · checked Sep 13, 2026
3	Mewburn Ellis	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	201-500	319 contacts →
	Indirect evidence “Mewburn Ellis is the forward-looking IP firm.” Source: RevenueBase Database · checked Sep 13, 2026
4	Carpmaels & Ransford	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	201-500	285 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 13, 2026
5	DEHNS	Indirect evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
6	D Young & CO LLP	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	201-500	226 contacts →
	Indirect evidence “D Young & Co is a leading top-tier European intellectual property firm, dedicated to protecting and enforcing our clients’ IP rights.” Source: RevenueBase Database · checked Sep 13, 2026
7	EIP	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	201-500	223 contacts →
	Partial evidence “EIP is a leading intellectual property law firm, trusted by businesses worldwide to turn innovation into competitive advantage.” Source: RevenueBase Database · checked Sep 13, 2026
8	J A Kemp	Partial evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
9	Venner Shipley	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	201-500	189 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 13, 2026
10	Withers & Rogers	Partial evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
11	BOULT	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	167 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 13, 2026
12	Gill Jennings & Every LLP	Partial evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
13	Maucher Jenkins	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	201-500	110 contacts →
	Strong evidence “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: RevenueBase Database · checked Sep 13, 2026
14	Abel Imray	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	102 contacts →
	Strong 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 13, 2026
15	LEE & Thompson LLP	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	97 contacts →
	Partial evidence “Lee & Thompson is one of the UK’s leading law firms for the media, technology and creative industries.” Source: RevenueBase Database · checked Sep 13, 2026
16	Powell Gilbert	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	70 contacts →
	Partial 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 13, 2026
17	Righthub - From Anaqua	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	66 contacts →
	Strong evidence “We’re a blend of experienced Intellectual Property professionals: patent attorneys, software entrepreneurs, administrators, and design and development gurus who have run and sold…” Source: RevenueBase Database · checked Sep 13, 2026
18	Page White Farrer	Indirect evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
19	Cleveland Scott York	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	46 contacts →
	Indirect evidence “Cleveland Scott York is one of Europe’s leading intellectual property firms.” Source: RevenueBase Database · checked Sep 13, 2026
20	Mintz, Levin, Cohn, Ferris, Glovsky And Popeo, P.C	Indirect evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
21	Slingsby Partners LLP	Indirect evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
22	Beck Greener LLP	Partial evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
23	Patentica	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	34 contacts →
	Partial evidence “At PATENTICA, we are dedicated to enhancing the value of your intellectual property through every aspect of our work.” Source: RevenueBase Database · checked Sep 13, 2026
24	Waterfront LAW	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	16 contacts →
	Partial evidence “We are London based solicitors specialising in intellectual property, technology, commercial, corporate and employment law.” Source: RevenueBase Database · checked Sep 13, 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: software patent law 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 software patent law firms.
Partial evidence: Its own public description names part of software patent law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name software patent law 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 24 of 97 software patent law firms based in London, United Kingdom

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Software patent law firms based in London, United Kingdom at a glance

As of Sep 13, 2026

58.3%Verified-email coverage

5.0%Mobile-number coverage

51.2Average contacts per company

11-50Median size (employees)

149.5%Largest-city concentration · London

Sep 13, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 15.0d

2,3060–30

58331–60

561–90

290–180

3180+

Company record updated

Median 65.0d

00–30

1,98531–60

2,29461–90

43390–180

257180+

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 software patent law 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 London, United Kingdom whose own description of what they do matches “software patent law 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 software patent law 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 software patent law firms, and records with no verified work email. Companies headquartered outside London 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, 2,899 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 13, 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.

Software patent law firms by metro in the United Kingdom

Software patent law firms in London145

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 software patent law 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 software patent law firms are there based in London, United Kingdom?

RevenueBase identified 97 software patent law firms headquartered in London, 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 software patent law firms?

London leads with 145 headquartered companies, followed by Leeds (14) and Cambridge (12).

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 2,899 verified decision-maker contacts tracked across these 97 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 13, 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.