Haseltine Lake Kempner LLP

What Haseltine Lake Kempner LLP does

Haseltine Lake Kempner LLP (HLK) is a UK-headquartered intellectual property law firm tracing its origins to 1850, operating as a private limited liability partnership with offices in London, Bristol, Leeds, Glasgow, and Munich, complemented by a Virtual China Desk. The firm offers end-to-end IP services spanning strategy, protection (prosecution, filing), transactions (agreements, assignments, licensing), and disputes (litigation, oppositions), and uniquely combines patent attorneys, trademark attorneys, and IP solicitors under one roof. HLK maintains a wholly owned subsidiary, HL Renewals LLP, that specializes in IP renewal and portfolio administration, providing a recurring-fee complement to its transactional practice. The firm has invested in building one of the largest UPC-ready benches in the UK with 40+ qualified European Patent Litigators, positioning it for the post-2023 European patent enforcement landscape. Its client base spans FTSE-grade corporates (including Tesco, JD Sports, Jet2, AP Racing, and Netsweeper) and 266 universities across 35 countries, with reported metrics of 97% client satisfaction, 82% litigation success over ten years, and 89% EPO opposition success. Specialist industry teams cover AI, Semiconductor, FemTech, and Green tech, signaling vertical specialization in emerging technology IP.

Name

Haseltine Lake Kempner LLP

Legal name

Haseltine Lake Kempner LLP

Website

https://hlk-ip.com

Company type

Private

Founded year

1850

Operating status

Operating

Headcount range

101–250 employees

Short description

Haseltine Lake Kempner LLP is a UK-headquartered intellectual property law firm founded in 1850 that advises corporates (e.g., Tesco, JD Sports, Jet2) and 266 universities across 35 countries on patent, trademark, and IP litigation matters, with offices in the UK, Munich, and a Virtual China Desk.

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 industries

IP Due Diligence & Freedom-to-Operate (FTO) Analysis (BPAHAMAG), Copyright Services & Content Protection (BPAHAMAC)

Keywords

• Intellectual property law
• Patent prosecution services
• Trademark protection services
• IP litigation
• IP strategy consulting

Headquarters

HQ city

Bristol

HQ country

United Kingdom

HQ region

Europe

Offices6 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Infrastructure, Others

Revenue model

1. IP Legal and Advisory Services: Professional services fees for intellectual property legal advice, patent and trademark prosecution, litigation, and related IP services spanning the entire IPR Lifespan from strategy through to disputes.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

Haseltine Lake Kempner LLP is a full-service intellectual property law firm providing patent and trademark prosecution, IP strategy and consultancy, IP transactions, and IP litigation and disputes services across the entire IP rights lifecycle. The firm combines patent attorneys, trade mark attorneys, and IP solicitors in the UK and Europe, serving multinational corporations, universities and research institutions, and startups and SMEs globally from offices in London, Bristol, Leeds, Glasgow, Munich, and a virtual China desk.

Product overview

Haseltine Lake Kempner LLP (HLK) is a global IP law firm providing full-service intellectual property services spanning the entire IPR Lifespan™. The firm operates through four main service pillars: Strategy (consultancy, IP audits, searching & watching, analytics, training, Patent Box & R&D tax credits), Protection (patents, trade marks, designs, copyright, business information, renewals), Transactions (commercial/IP agreements, due-diligence, licensing, assignments, NDAs, data & technology), and Disputes (oppositions & appeals, litigation, cancellation, domain & company name disputes, anti-counterfeiting, freedom to operate). The firm also operates through HL Renewals LLP, a wholly owned subsidiary handling IP renewal services, and offers an Urgent Patent Application Drafting Service for expedited patent protection.

Differentiator

Problem solved

Functional benefit

Products and services

• IP Strategy Services Strategic IP advisory services including consultancy, IP audits and SME funding support, searching and watching, IP analytics, training, and Patent Box and R&D tax credit advisory for multinational corporations, universities, and startups.
• IP Protection Services Prosecution and registration of IP rights including patents, trade marks, designs, copyright, business information, and renewal services for clients across multiple jurisdictions.
• IP Transactions Services Commercial IP advisory covering due-diligence, licensing, assignments, NDAs, data and technology agreements, and broader commercial/IP agreements supporting IP commercialization and transactions.
• IP Disputes Services Contentious IP services including oppositions and appeals, litigation (including UPC representation), cancellation actions, domain and company name disputes, anti-counterfeiting enforcement, and freedom-to-operate analyses.
• HL Renewals LLP Wholly owned subsidiary that undertakes renewals of granted IP rights including patents, trade marks, designs, and utility models, ensuring maintenance fees are paid in good time for clients of the firm.
• Urgent Patent Application Drafting Service Expedited patent application drafting service for clients needing urgent protection of inventions.

Quantifiable outcome

• 97% client satisfaction rate in independent survey
• +3 more outcomes

Named customers5 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators6 records

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• Bird & Bird LLP: Large international full-service law firm with a major IP practice across UK, Europe, and Asia. Broader incumbent that competes with HLK for IP mandates but offers a much wider practice area portfolio.

Direct peers

• Marks & Clerk: One of the largest UK-headquartered IP law firms with a similar full-service patent and trademark offering across the UK, Europe, and Asia. Directly comparable in scale, service mix, and university/multinational client base to HLK.
• HGF Limited: UK-headquartered IP law firm with a strong patent prosecution and litigation practice across Europe. Closely comparable in service pillars, geographic footprint, and standout rankings in IP STARS and Legal 500.
• Mathys & Squire LLP: Long-established UK IP law firm with a full-service patent and trademark practice. Direct peer in terms of client mix (multinationals, universities, SMEs) and technical sector coverage.
• Mewburn Ellis LLP: UK IP law firm with a long heritage, comparable full-service patent/trademark practice and similar focus on university tech-transfer and SME clients. Overlapping service breadth and peer client base.
• J A Kemp LLP: UK IP law firm with a comparable full-service patent and trademark practice across multiple technical disciplines. Direct competitor for UK and European patent prosecution mandates.
• Potter Clarkson LLP: UK IP law firm with comparable patent and trademark offerings, particularly in chemistry, biotechnology, and engineering. Direct peer for UK and European IP mandates.
• Kilburn & Strode LLP: London-based IP law firm with comparable patent and trademark prosecution practice. Direct peer in the UK IP firm rankings and similar focus on high-tech and engineering sectors.
• Boult Wade Tennant LLP: Established UK IP law firm with similar patent and trademark service breadth. Comparable in client segments served and analytical rankings within the UK IP market.
• Carpmaels & Ransford LLP: London-based IP law firm with strong patent prosecution and litigation credentials, particularly in life sciences and chemistry. Direct competitor in London IP market with similar service pillars.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/haseltine-lake-kempner
• Instagraminstagram.com/hlk_ip
• Xx.com/hlkllp
• Facebookfacebook.com/HaseltineLakeKempner

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries1 record

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 Haseltine Lake Kempner LLP