Ipsilon
Ipsilon is a French intellectual property consulting firm offering patents, trademarks, designs, IP advisory, and IP enforcement services to corporations, SMEs, start-ups, and research institutions across 20 offices in five countries, recently merged with NLO to become the EU's largest IP firm.
- Company typePrivate
- Founded2001
- HeadquartersBourg-la-reine, France
- Headcount101–250
- GTM typeB2B
- OfferingServices
What Ipsilon does
Ipsilon (legally IPSILON SAS) is a French intellectual property consulting firm founded in 2001 by Valérie Feray and headquartered in Paris. The firm delivers a "One Stop Shop" suite of IP services organized into three pillars — IP Prosecution (patents, trademarks, designs, domain names, copyrights), IP Advisory (IP audits, contracts, valuation, strategy, due diligence), and IP Enforcement (litigation, mediation, anti-counterfeiting, surveillance) — plus specialized offerings such as prior-art searches and IP awareness training. Its underlying technology stack is professional-services-based: a multidisciplinary team of approximately 250 patent attorneys, trademark attorneys, European Patent Attorneys, Unified Patent Court representatives, mediators, and legal/contract/tax specialists supported by AI tools governed by an internal AI Code of Conduct for patent searches, monitoring, and document analysis, with all AI-generated outputs human-validated before client delivery.
The firm operates a B2B professional-services revenue model, invoicing clients either on hourly rates or fixed prices with occasional success fees, plus a recurring annuity stream for IP title renewals and maintenance fees. Since partnering with Waterland Private Equity in 2022, Ipsilon has executed an aggressive buy-and-build strategy — acquiring NONY, LECOMTE & PARTNERS, and IP HILLS (2023), Laurent & Charras (2024), and Barre Laforgue & Associés (2025) — and in 2025 merged with Dutch firm NLO to create the #1 IP firm in the European Union. The firm serves large corporations, ETIs, SMEs, start-ups, and research institutions across more than 20 offices in France, Belgium, Luxembourg, Germany, and the United States, and is recognized as a TOP 3 IP consultancy in France with awards from Leaders League, IAM, and IP Stars.
Ipsilon firmographics
Firmographics- Name
- Ipsilon
- Legal name
- IPSILON SAS
- Website
- https://ipsilon-ip.com
- Company type
- Private
- Founded year
- 2001
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- Ipsilon is a French intellectual property consulting firm offering patents, trademarks, designs, IP advisory, and IP enforcement services to corporations, SMEs, start-ups, and research institutions across 20 offices in five countries, recently merged with NLO to become the EU's largest IP firm.
- Ownership category
- akta.pro rank
Ipsilon industry classification
Industry- Product category
- Intellectual Property Services
- NAICS
- Management Consulting Services (54161), Management, Scientific, and Technical Consulting Services (5416)
- SIC
- Services-Management Consulting Services (8742)
- akta.pro primary industry
- Patent Prosecution & Portfolio Management (BPAHAMAA)
- akta.pro secondary industries
- IP Filing, Annuities & Renewals Administration (BPAHAMAJ), IP Compliance, Anti-Counterfeiting & Enforcement (BPAHAMAK), IP Due Diligence & Freedom-to-Operate (FTO) Analysis (BPAHAMAG), IP Litigation & Dispute Resolution (BPAHAMAE), IP Search, Watch & Competitive Intelligence (BPAHAMAI), IP Valuation, Damages & Royalty Analysis (BPAHAMAH)
Keywords
Where Ipsilon is headquartered
LocationHeadquarters
- HQ city
- Bourg-la-reine
- HQ country
- France
- HQ region
- Europe
Offices20 records
Markets served
Ipsilon business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales
Revenue model
- Professional IP Consulting Services: Services are invoiced in the form of fees by application of an hourly rate or on the basis of a predefined fixed price. The method of invoicing is agreed upon when IPSILON's terms and conditions are validated. Additional fees may be agreed based on results obtained. External expenses, taxes, official fees and charges (including those incurred with foreign correspondents) are invoiced separately.
- IP Rights Maintenance and Renewal: Ongoing representation mandates for the payment of maintenance fees (annuities) or renewal of IP titles (patents, trademarks, designs). Clients are required to provide funds for official fees set by industrial property offices.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Pay-as-you-go | Hourly rate or fixed price model based on project scope |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels4 records
Ipsilon product offering
Product offeringCore offering
IPSILON is a professional intellectual property consulting firm offering a One Stop Shop for IP services across three pillars: IP Prosecution (patents, trademarks, designs filing, registration, maintenance, and renewal), IP Advisory (IP audit, contracts, valuation, IP strategy, IP due diligence, IP awareness), and IP Enforcement (litigation, mediation, anti-counterfeiting, surveillance). The firm serves large corporations, ETIs, SMEs, start-ups, and research institutions with a multidisciplinary team of 250 experts across 20 offices in France, Belgium, Luxembourg, Germany, and the United States.
Product overview
IPSILON is a leading French intellectual property consulting firm offering a comprehensive 'One Stop Shop' approach to IP services. The core offering consists of three main service pillars: (1) IP Prosecution covering patents, trademarks, and designs; (2) IP Advisory including IP audit, contracts, and valuation services; and (3) IP Enforcement encompassing litigation, mediation, and anti-counterfeiting. Additional specialized services include prior art searches, surveillance, IP process management, IP awareness training, IP strategy development, copyright protection, and IP due diligence. IPSILON serves clients across multiple sectors including chemistry, engineering, healthcare, life sciences, materials, pharmaceuticals, physics, and software & ICT. The firm has grown significantly through acquisitions including NONY (2023), Laurent & Charras (2024), Barre Laforgue & Associés (2019), and others, expanding both geographic coverage and technical expertise. With approximately 250 experts across offices in France, Belgium, Luxembourg, Germany, and the United States, IPSILON positions itself among the top IP consulting firms in France and Europe.
Differentiator
Problem solved
Functional benefit
Products and services
- Patents
Companies that use Ipsilon
Customer profileNamed customers5 records
Segments4 records
Ideal customer profiles4 records
Ipsilon technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
AI capability3 records
Feature1 record
Ipsilon partnerships and signals
Strategic signalPartnerships
Ten partnerships are on record, tiered minor and core.
- JeantetminorIPSILON co-organized a conference with Jeantet law firm on the Unified Patent Court (JUB) and the advantages of the Paris Local Division. Two hours of conference with experts discussing seizure proceedings, jurisprudence, and cost management.
- NLO (NV Nederlandsch Octrooibureau)coreIn 2025, IPSILON and NLO united to create the #1 IP firm in the EU. NLO is a leading European IP firm based in The Hague. This marks a major step in the shared vision of both firms to become the go-to partner for innovators worldwide.
- Laurent & CharrascoreWith the acquisition of Laurent & Charras in 2024, IPSILON rose to third place among IP advisors in France. The acquisition strengthened presence in the Rhône-Alpes region, Grand Est, and internationally.
- NONYcoreFounded in 1964, NONY is a versatile IP consulting firm of approximately 80 people with strong expertise in chemistry, life sciences, pharmacy, IT, energy, materials, and physics. NONY joined IPSILON in February 2023, allowing Ipsilon to rank among the top five French IP firms.
- IP HILLScoreIP HILLS joined IPSILON in 2023, expanding expertise particularly in software and life sciences. IP HILLS brought offices in Luxembourg and Belgium.
- LECOMTE & PARTNERScoreLECOMTE & PARTNERS joined IPSILON in 2023 as part of the same acquisition wave as NONY and IP HILLS, broadening competencies and geographical presence.
- DISTINCTIVEcoreIn 2020, DISTINCTIVE joined IPSILON, strengthening presence in Luxembourg and Belgium for strategic brand asset management and dispute resolution.
- NusscoreIn 2019, the specialized firm Nuss joined IPSILON, strengthening expertise in Germany and eastern France. New offices opened in Munich with integration of IPSILON Patentanwaltsgesellschaft.
- Barre-LaforguecoreBarre-Laforgue integrated into IPSILON in 2018, strengthening expertise particularly in aerospace and aviation innovation, and presence in southwest France. The Toulouse office traces its roots to this historic IP player established in Toulouse for decades.
- US OperationscoreIn 2015, IPSILON opened its first foreign office in New York, enabling the firm to offer IP and litigation services in the United States.
Scale indicators4 records
Recent moves10 records
Expansion highlights6 records
Ipsilon competitors and assessment
Company assessmentDirect peers
- Lavoix: European IP consultancy with French roots providing patent, trademark, design, and IP strategy services. Comparable in service offering, technical coverage, and pan-European ambitions.
- NLO (NV Nederlandsch Octrooibureau): Leading Dutch IP firm headquartered in The Hague that merged with IPSILON in 2025 to create the #1 IP firm in the EU. Directly comparable as a full-service European patent and trademark firm with similar technical domain breadth.
- Regimbeau: Major French IP consultancy and longstanding direct competitor to IPSILON in patents, trademarks, and designs. Comparable mid-sized French IP firm with similar service breadth and target client segments.
- Plasseraud IP: Top French IP firm offering patent prosecution, trademark, design, and IP litigation services. Directly competes with IPSILON for French and European IP mandates across similar technical sectors.
- Santarelli: Established French IP firm with strong patent prosecution practice and European coverage. Direct peer in size, scope, and target customer base for mid-market and enterprise IP work.
- Novagraaf: European IP service provider with offices across multiple jurisdictions, offering patent, trademark, design, and IP management services. Directly comparable continental competitor.
- Dennemeyer: Global IP service provider offering patent annuity payments, trademark renewals, and IP management software alongside advisory services. Comparable in IP portfolio management and filings business.
- Marks & Clerk: Leading UK-headquartered IP firm with extensive European presence offering patent and trademark attorney services. Comparable in pan-European coverage and technical sector breadth.
Broad incumbents
- Hogan Lovells (IP practice): Global full-service law firm with a large, established IP practice covering patents, trademarks, litigation, and IP transactions. Broader incumbent offering legal services beyond IP specialization.
- Bird & Bird (IP practice): International law firm with a strong IP, technology, and life sciences practice across Europe. Broader incumbent competing for high-value IP mandates within a wider legal services portfolio.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat4 records
Key risks6 records
Key highlights6 records
Customer concentration
Ipsilon social profiles
Digital presenceIpsilon financial estimates
Financial estimateRevenue estimate
Valuation estimate
Ipsilon leadership team
Management profileNumber of profiles
Profiles13 records
Ipsilon funding detail
Funding detailFunding overview
Funding rounds1 record
Investors1 record
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Ipsilon M&A and investment
M&A and investmentM&A3 records
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Ipsilon
What does Ipsilon do?
IPSILON is a professional intellectual property consulting firm offering a One Stop Shop for IP services across three pillars: IP Prosecution (patents, trademarks, designs filing, registration, maintenance, and renewal), IP Advisory (IP audit, contracts, valuation, IP strategy, IP due diligence, IP awareness), and IP Enforcement (litigation, mediation, anti-counterfeiting, surveillance). The firm serves large corporations, ETIs, SMEs, start-ups, and research institutions with a multidisciplinary team of 250 experts across 20 offices in France, Belgium, Luxembourg, Germany, and the United States.
Is Ipsilon a public or private company?
Ipsilon is a private company. It is classified as private equity controlled and is currently operating.
When was Ipsilon founded?
Ipsilon was founded in 2001. It employs 101 to 250 people.
Where is Ipsilon based?
Ipsilon is headquartered in Bourg-la-reine, France, in the Europe region.
How does Ipsilon make money?
Two revenue lines are on record. Professional IP Consulting Services are the primary driver. The others are IP Rights Maintenance and Renewal.
Who are Ipsilon's main competitors?
Direct peers on record are Lavoix, NLO (NV Nederlandsch Octrooibureau), Regimbeau, Plasseraud IP, Santarelli, Novagraaf, Dennemeyer and Marks & Clerk. Broad incumbents are Hogan Lovells (IP practice) and Bird & Bird (IP practice).
Does Ipsilon have an API?
No public API is recorded for Ipsilon.
What industry is Ipsilon in?
Ipsilon's product category is Intellectual Property Services. Its primary akta.pro industry code is BPAHAMAA, Patent Prosecution & Portfolio Management, with a secondary code of BPAHAMAJ, IP Filing, Annuities & Renewals Administration. Its NAICS code is 54161 and its SIC code is 8742.