Company lists · Data refreshed September 2026

Top 23 Software patent firms based in London, United Kingdom

Name: Software patent 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 63 companies tracked

RevenueBase identified 63 software patent firms headquartered in London, United Kingdom as of September 2026 and tracks 3,164 professional contacts across them, including 2,062 with verified work emails and 153 with mobile numbers. London is the largest hub.

This list covers software patent 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

63Companies

3,164Contacts tracked

2,062Verified emails

153Mobile numbers

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The 23 largest software patent firms based in London, United Kingdom

Ranked by team size

Top 23 of 63 software patent 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 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	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
2	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
3	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
4	EIP	Indirect evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
5	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
6	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
7	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
8	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
9	Abel Imray	Partial evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
10	Powell Gilbert	Indirect evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
11	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
12	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
13	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
14	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
15	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
16	Ik-Ip LTD	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	16 contacts →
	Partial evidence “A team of award-winning highly experienced Chartered Patent Attorneys, European Patent Attorneys, UK and EU Trade Mark Attorneys and IP litigators with a fresh strategic approach…” Source: RevenueBase Database · checked Sep 13, 2026
17	Dolleymores	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	14 contacts →
	Partial evidence “European Patent Attorneys, Chartered Patent Attorneys (UK), UK Registered Trade Mark Attorneys.” Source: RevenueBase Database · checked Sep 13, 2026
18	Patent Boutique LLP	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	13 contacts →
	Partial evidence “Since launching in 2014, Patent Boutique LLP has acquired an enviable track record for delivering results for its growing and impressive client roster.” Source: RevenueBase Database · checked Sep 13, 2026
19	Williams Powell	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	13 contacts →
	Partial evidence “We are British and European Patent and Trade Mark Attorneys.” Source: RevenueBase Database · checked Sep 13, 2026
20	Hansel Henson	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	9 contacts →
	Indirect evidence “Intellectual Property and Media Lawyers Hansel Henson is a specialist firm of solicitors with a sole emphasis on soft Intellectual Property and Media law.” Source: RevenueBase Database · checked Sep 13, 2026
21	Alston Asquith	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	7 contacts →
	Indirect evidence “Alston Asquith is a specialist commercial and technology law firm serving innovative companies and industry leading organisations across a range of technology, digital media and…” Source: RevenueBase Database · checked Sep 13, 2026
22	Bear & Wolf	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	7 contacts →
	Indirect evidence “Bear & Wolf are Intellectual Property specialists in trade mark, copyright and design law.” Source: RevenueBase Database · checked Sep 13, 2026
23	Ionic Legal	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	6 contacts →
	Indirect evidence “Strength in Unity, Excellence in Delivery At Ionic Legal, we're defined by the deep bonds we build with our colleagues and clients and our determination to super please clients.” 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 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 firms.
Partial evidence: Its own public description names part of software patent 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 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 23 of 63 software patent firms based in London, United Kingdom

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

As of Sep 13, 2026

65.2%Verified-email coverage

4.8%Mobile-number coverage

50.2Average contacts per company

11-50Median size (employees)

69.8%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 16.0d

1,6270–30

42731–60

461–90

190–180

3180+

Company record updated

Median 65.0d

00–30

1,33931–60

1,39961–90

24990–180

177180+

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 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 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 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 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, 2,062 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 firms by metro in the United Kingdom

Software patent firms in London44

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 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 firms are there based in London, United Kingdom?

RevenueBase identified 63 software patent 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?

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

Which city has the most software patent firms?

London leads with 44 headquartered companies, followed by Leeds (6) and Birmingham (4).

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 2,062 verified decision-maker contacts tracked across these 63 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.