What Kolster does

Kolster Oy Ab is a Helsinki-headquartered Finnish intellectual property and legal services firm founded in 1874 by German engineer Rudolf Kolster and continuously family-owned for five generations. The firm specialises in patent prosecution, trademark registration, design protection, and adjacent legal services (technology transfer, licensing, commercial agreements, transactions, litigation), and is recognised as one of Europe's most experienced IP expert companies with a headcount of approximately 80 European patent attorneys, trademark and design attorneys, lawyers, and IP specialists.

The firm's operating footprint comprises six offices in Finland (Helsinki HQ, Vaasa, Oulu, Kuopio, Tampere) and Munich, Germany, supplemented by Kolster China Desk™ and Kolster Russia Desk™ for cross-border IP matters. Operational scale is anchored by high-volume patent prosecution throughput: 300–400 first filings, 300 EPO filings, 1,000 national filings, and 2,500 office actions annually, with roughly 2,000 EP patents validated in Finland through Kolster. The MyKolster® client portal provides real-time IP portfolio monitoring. Differentiated credentials include first foreign full membership in the Chinese Trademark Association (since 2017), UPC local division connectivity via the Helsinki Market Court, and an IAM Patent 1000 top ranking for prosecution. Customer segments span Fortune 100 corporations (about 49 are clients), 200 global brand owners served in anti-counterfeiting, startups and SMEs (including iLOQ, Polar, Ponsse, Neste, VTT, Valmet, Valio, Optomed, Haltian, Rapala, Sisu Auto), as well as universities and research institutions.

Revenue is generated under a professional services model with quote-based pricing (24-hour quote turnaround) and ongoing annuity-maintenance engagements. The go-to-market is sales-led enterprise and inside sales, complemented by content marketing (blog, Kolster News newsletter), webinars, and thought leadership. From 2018 Kolster has been executing its largest-ever three-year internationalisation project co-financed by Business Finland. Leadership includes CEO Timo Helosuo (ex-Nokia, ex-Accenture; Chairman of Finland-China Trade Association) and a partner bench spanning biotech, chemistry, ICT, mechanical, and software-related IP.

Name

Kolster

Legal name

Kolster Oy Ab

Website

https://kolster.fi

Company type

Private

Founded year

1874

Operating status

Operating

Headcount range

51–100 employees

Short description

Kolster Oy Ab is a 150-year-old Finnish intellectual property and legal services firm, headquartered in Helsinki, that serves startups, SMEs, Fortune 100 corporations, universities, and research institutions with patent prosecution, trademark registration, design protection, licensing, and litigation across Finland, Europe, and China.

Ownership category

akta.pro rank

Product category

Intellectual Property Legal Services

NAICS

Offices of Lawyers (54111), Legal Services (5411)

SIC

Services-Legal Services (8111)

akta.pro primary industry

Patent Prosecution & Portfolio Management (BPAHAMAA)

akta.pro secondary industries

IP Compliance, Anti-Counterfeiting & Enforcement (BPAHAMAK), IP Filing, Annuities & Renewals Administration (BPAHAMAJ), Trade Secret Protection & IP Strategy (BPAHAMAD), IP Search, Watch & Competitive Intelligence (BPAHAMAI)

Keywords

• Patent prosecution services
• Trademark registration
• Intellectual property law
• IPR legal services
• Brand protection services

Headquarters

HQ city

Helsinki

HQ country

Finland

HQ region

Europe

Offices6 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. IPR Professional Services: Comprehensive intellectual property rights services including patent prosecution, trademark registration, design protection, and legal services for protecting, defending, and commercially exploiting inventions, designs, and brands worldwide. Revenue generated through project-based engagements and ongoing client relationships.
2. Patent and Utility Model Maintenance Services: Annuity maintenance services for patents and utility models including deadline monitoring, renewal reminders, and timely payment of official fees. Transparent and known service costs.
3. Legal Services: Technology transfers, licensing, commercial agreements, transactions, litigation, and EU funding consultation for collaborative research and innovation projects (Horizon 2020).

Pricing tiers

Go-to-market motion3 records

Distribution channels3 records

Marketing channels5 records

Core offering

Kolster provides comprehensive intellectual property rights (IPR) and legal services including patent prosecution, trademark registration, design protection, brand protection, IP portfolio maintenance, and legal expertise in technology transfers, licensing, commercial agreements, transactions, and litigation. The firm serves clients through expert teams assembled by technology branch and offers specialized regional desks for China and Russia.

Product overview

Kolster is a full-service IPR (Intellectual Property Rights) and legal services firm offering comprehensive intellectual property protection, defense, and commercialization services. The core offering includes Patent Prosecution Services (300-400 first filings, 300 EPO filings, 1,000 national filings annually) and Trademark Prosecution Services, complemented by Legal Expertise (technology transfers, licensing, commercial agreements, litigation). Key differentiated offerings include MyKolster®, a client portal for real-time IP portfolio monitoring, and specialized regional desks: Kolster China Desk™ for Chinese market IP matters and Kolster Russia Desk™ for Russian market support. The company also offers Patent and Utility Model Maintenance (Annuities) Services for ongoing portfolio management.

Differentiator

Problem solved

Functional benefit

Brands

• Kolster China Desk™: Specialized IP services for Chinese market operations, helping European enterprises enter Chinese markets and Chinese companies enter European markets, operating in Chinese language with understanding of local practices and laws
• MyKolster®

Products and services

• Patents (Patentit)

Quantifiable outcome

• 49 of Fortune 100 global companies are clients
• +3 more outcomes

Named customers19 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Four partnerships are on record, tiered core and strategic.

• Chinese Trademark Association (CTA)coreStrategic or Co-development Partner · 1 January 2017Kolster became the first foreign member of the CTA in 2017. This membership provides a direct channel for influencing the development of Chinese trademark law and practices, and bears strong testimony to Kolster's long-term work and expertise in China.
• Co-Talent Intellectual Property Firm (Beijing, China)strategicTechnology or IntegrationKolster collaborates with Co-Talent for discussions on Chinese market entry, IPR practices differences between China and Western countries, and China IPR improvement actions. Stephen Yang serves as Managing Partner.
• European Patent Office (EPO)coreTechnology or IntegrationKolster handles 300 EPO filings annually and about 2,000 EP patents are validated in Finland through Kolster. Deep expertise in EPO prosecution and opposition proceedings.
• Market Court (Finland)coreStrategic or Co-development PartnerFinland's local division of the Unified Patent Court operates in connection with the Market Court. Kolster handles client litigations in Helsinki and other UPC locations utilizing international partner network.

Scale indicators8 records

Recent moves8 records

Expansion highlights6 records

Direct peers

• Bird & Bird: Global IP- and tech-focused law firm with deep European patent prosecution and UPC capability. Competes directly with Kolster for multi-jurisdictional IP mandates from Finnish/Nordic corporates seeking broader geographic reach.
• Borenius: Leading Finnish full-service law firm with a dedicated IP and technology practice. Most direct head-to-head competitor in the Helsinki market for IP prosecution, trademarks, and IP litigation.
• Zacco: Nordic-origin IP firm offering patent, trademark, and design services across Scandinavia and Europe. Closely comparable on geography (Nordic base), service mix (IP prosecution + brand protection), and enterprise-mid-market focus.
• Marks & Clerk: Large UK-headquartered IP-only firm with a strong patent prosecution and annuities practice across Europe. Competes for cross-border IP prosecution work from multinational clients including Fortune 500 corporates.
• Potter Clarkson: European IP firm specializing in patent prosecution, oppositions, and IP strategy across biotech, chemistry, and engineering — overlapping directly with Kolster's technology-branch-based patent teams.
• Castrén & Snellman: Major Finnish full-service law firm with IP, tech, and commercial advisory practices. Direct competitor for IP mandates from Finnish corporates and competes for the same enterprise client roster.
• Roschier: Leading Nordic law firm with strong IP and technology practices in Finland and Sweden. Comparable in serving large Nordic corporates (e.g., listed Finnish enterprises) with full-scope IP and commercial legal services.

Broad incumbents

• Hogan Lovells: Global law firm with a top-tier IP practice spanning patent prosecution, licensing, and litigation across major jurisdictions. Competes for the multinational IP needs of Kolster's Fortune 100 clients, particularly for cross-border disputes.
• DLA Piper: Global law firm with a broad IP offering, serving the same Fortune 100 enterprise client base as Kolster. They represent a competitive threat in panel reviews and large cross-border IP mandates.

Regional players

• Seppo Laine IP: Smaller Finnish IP boutique offering patent prosecution and IP legal services. Operates in the same Helsinki market with similar SME and startup client focus, but at a smaller scale than Kolster.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/kolster_fi
• Facebookfacebook.com/KolsterOyAb
• LinkedInlinkedin.com/company/kolster

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles16 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 Kolster