Marks & Clerk

What Marks & Clerk does

Marks & Clerk is one of the world's longest-established intellectual property law firms, founded in Birmingham in 1887 and headquartered in London. The firm operates as a UK limited liability partnership (Marks & Clerk LLP, regulated by the Intellectual Property Regulation Board) with wholly-owned operating entities in Canada, China, Hong Kong, Singapore, Malaysia, and a branch in Luxembourg, employing 501–1,000 staff including 300+ specialist practitioners. Its service offering is organized around core IP disciplines — patents, trade marks and brands, designs, litigation and dispute resolution, commercial IP and contracts, copyright, trade secrets, due diligence, freedom-to-operate, EPO oppositions, European patent validations (covering up to 43 countries), anti-counterfeiting, open source compliance, domain names, plant variety rights, and standard essential patents — overlaid with sector practices spanning life sciences, digital transformation (AI, blockchain, quantum computing, extended reality, 3D printing), aerospace and space, energy and environment, agritech, defence, and universities/spin-outs.

The firm generates revenue on a professional services model through hourly and fixed-fee billing to a diversified client base ranging from startups and universities to global multinationals. Distribution is delivered via 15 direct offices across three continents plus client liaison coverage in Japan and Korea, supported by a multi-language digital presence (English, French, Simplified and Traditional Chinese, Korean, Japanese). Key go-to-market assets include a content-led thought leadership engine (insights blog, IP Driven Start-up podcast, events, newsletters) and a multi-jurisdictional coordination model that delivers single-point-of-contact case management for complex cross-border filings and oppositions, evidenced by outcomes such as a 63% EPO patent revocation rate versus a 27% industry average, 70+ UPC litigation representatives, and consecutive top-tier analyst rankings (Legal 500, Chambers, IAM Patent 1000, WTR 1000, MIP, Financial Times) across multiple years and geographies.

Name

Marks & Clerk

Legal name

Marks & Clerk LLP

Website

https://marks-clerk.com

Company type

Private

Founded year

1887

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Marks & Clerk is a leading global intellectual property law firm with 300+ specialist practitioners across 15 offices in the UK, Europe, Asia, and Canada, providing patent, trade mark, design, and IP litigation services to enterprises, startups, and universities since 1887.

Ownership category

akta.pro rank

Product category

Intellectual Property Legal Services

NAICS

Offices of Lawyers (541110), Legal Services (5411)

SIC

Services-Legal Services (8111)

akta.pro primary industry

Patent Prosecution & Portfolio Management (BPAHAMAA)

akta.pro secondary industry

Trademark Prosecution & Brand Protection (BPAHAMAB)

Keywords

• Intellectual property services
• Patent prosecution
• Trademark registration
• IP litigation
• European patent validation

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices15 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Patent Services: Patent prosecution, drafting, and prosecution services across multiple jurisdictions including UK, European, and international patents.
2. Trade Mark Services: Trade mark registration, management, and enforcement services including brand protection strategies.
3. IP Litigation: Intellectual property litigation and dispute resolution services including patent litigation, trademark disputes, and copyright matters.
4. Commercial IP Services: Due diligence, freedom to operate, commercial IP contracts, and IP strategy advisory services.
5. European Patent Validations: European patent validation services with fixed-fee pricing covering up to 43 European countries.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Marks & Clerk is a global intellectual property law firm that provides specialist IP legal services to businesses and research institutions worldwide. Its core offerings include patent drafting, filing and prosecution, trade mark registration and portfolio management, IP litigation and dispute resolution, designs registration, copyright and trade secrets protection, due diligence, freedom-to-operate analyses, EPO oppositions, European patent validations across up to 43 countries, anti-counterfeiting enforcement, and commercial IP advisory including licensing and standard-essential patent (FRAND) advice.

Product overview

Marks & Clerk is a leading international intellectual property law firm offering a comprehensive suite of legal services organized around core practice areas: Patents (drafting, filing, prosecution), Brands & Trade Marks (registration, portfolio management), Designs (registered and unregistered protection), Litigation & Dispute Resolution, Commercial IP & Contracts, Copyright, Trade Secrets, Due Diligence, Freedom to Operate, EPO Patent Oppositions, European Patent Validations, Anti-counterfeiting, Open Source & Third Party Code, Domain Names, Plant Variety Rights, and Standard Essential Patents. The firm also operates specialized sector practices covering Digital Transformation (AI, blockchain, 3D printing, quantum computing, extended reality), Life Sciences, Aerospace & Space Technologies, Energy & Environment, Medical Technologies, Chemistry, Transport, Entertainment & Creative Industries, Food & Drink, Fashion & Retail, Universities & Research Bodies, Start-ups & Spin-outs, and Defence. The offering is structured as a full-service IP law firm with sector-specific expertise rather than a software product platform.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• 63% patent revocation rate in EPO oppositions (vs 27% industry average)
• +2 more outcomes

Named customers5 records

Segments6 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

One partnership is on record.

• Space NetworkcoreStrategic or Co-development Partner · 13 April 2026Marks & Clerk partnered with Space Network on the 'Impact Beyond Orbit' initiative exploring the dual-purpose value of space tech innovation. This collaboration examines how space technology innovations can have applications beyond their original space sector use, highlighting the importance of IP strategy for UK space sector commercialization.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/marksandclerk

Revenue estimate

Valuation estimate

Number of profiles

Profiles13 records

Subsidiaries6 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Marks & Clerk