Dannemann Siemsen

Intellectual Property Law Servicesdannemann.com.br

Company typePrivate
Founded1900
HeadquartersRio De Janeiro, Brazil
Headcount501–1,000
GTM typeB2B
OfferingServices

Dannemann Siemsen firmographics

Firmographics

Name: Dannemann Siemsen
Legal name: Dannemann, Siemsen, Bigler & Ipanema Moreira
Website: https://dannemann.com.br
Company type: Private
Founded year: 1900
Operating status: Operating
Headcount range: 501–1,000 employees
Ownership category
akta.pro rank

Dannemann Siemsen industry classification

Industry

Product category: Intellectual Property Law Services
NAICS: Offices of Lawyers (541110), Legal Services (5411), All Other Legal Services (541199)
SIC: Services-Legal Services (8111)
akta.pro primary industry: Standards-Essential Patents (SEP) & FRAND Advisory (BPAHAMAL)

Keywords

Intellectual property law
Patent prosecution services
Trademark registration
IP litigation
Copyright protection

Where Dannemann Siemsen is headquartered

Location

Headquarters

HQ city: Rio De Janeiro
HQ country: Brazil
HQ region: Latin America

Offices4 records

Markets served

Dannemann Siemsen business model

Business model

GTM type: B2B
Offering type: Services
Cost components: Personnel, Operations, Marketing or Sales, Others, Infrastructure

Revenue model

Legal Advisory Services: Professional legal services in intellectual property including patents, trademarks, copyrights, trade secrets, industrial designs, and geographical indications. Services include advisory, prosecution, litigation, and transactional work.
Litigation Services: Civil, criminal, and administrative litigation services in IP and related areas, including arbitration and mediation proceedings
Contract Services: Drafting, analysis and negotiation of commercial agreements, franchises, IP licensing agreements, technology transfer agreements, and technical assistance agreements

Go-to-market motion2 records

Distribution channels3 records

Marketing channels6 records

Dannemann Siemsen product offering

Product offering

Core offering

Dannemann Siemsen is a Brazilian law firm that provides intellectual property and related legal services, including patent and trademark prosecution, IP litigation, arbitration and mediation, copyright, industrial design, trade secret, geographical indication and entertainment law. The firm also delivers ancillary legal services in privacy and data protection (LGPD/GDPR), blockchain and smart contracts, franchising, regulatory, tax, advertising, corporate and consumer law. Its client base spans multinational and domestic enterprises across multiple industry verticals in Brazil and Latin America.

Product overview

Dannemann Siemsen is a Brazilian law firm dedicated to Intellectual Property since 1900, operating as a single integrated legal practice offering comprehensive services across six main pillars: Intellectual Property (patents, trademarks, copyrights, industrial designs, geographical indications, trade secrets, entertainment), Litigation (arbitration, civil/business, criminal, IP litigation, judicial reorganization, mediation), Consumer Relations (administrative litigation, advisory, business prevention, judicial litigation), Contracts (commercial agreements, franchises, IP agreements), Law and Technology (blockchain/smart contracts, privacy/data protection, software), and Other areas (advertising, compliance, corporate law, IP asset evaluation, regulatory, tax). The firm serves clients across multiple industry segments including biotechnology, chemicals, entertainment, fashion, ICT, and ESG, with 4 offices in Brazil and 1 hub in Uruguay. The portfolio includes specialized sub-initiatives such as the DS Diversity Program and DS Women initiative, alongside the Dannemann Siemsen Institute (IDS) for academic outreach.

Differentiator

Problem solved

Functional benefit

Brands

DS 360°: News, articles and projects platform featuring firm updates, legal insights, and ESG initiatives
DS Diversity Program
DS Women / DS Elas
ESG Centre
IP Eagle Talents Selection and Training Program

Products and services

Patent Services
Trademark Services
IP Litigation
Copyright Services
Industrial Design Protection
Geographical Indications
Trade Secrets Protection
Entertainment Law
Arbitration and Mediation
Privacy and Data Protection
Blockchain and Smart Contracts
Software Registration and Licensing
IP Agreements
Franchise Services
Consumer Relations
Regulatory Law
Criminal IP Enforcement
Corporate Law
Evaluation of Intellectual Assets
Compliance and Internal Investigations
Advertising Law
Tax Law
Dannemann Siemsen Institute (IDS)

Quantifiable outcome

Chambers & Partners Global 2026 ranked as leader in IP: Patents, Trademarks, Copyright and Trade Secrets in Brazil
+3 more outcomes

Companies that use Dannemann Siemsen

Customer profile

Named customers3 records

Segments11 records

Ideal customer profiles4 records

Dannemann Siemsen technology and API

Technology

Technology focussed No

API detail

Has API: No
API docs
API detail

Core technology

AI maturity

App detail

Feature3 records

Dannemann Siemsen partnerships and signals

Strategic signal

Partnerships

Three partnerships are on record, tiered core and minor.

Moraes & Savaget AdvogadoscoreStrategic or Co-development PartnerStrategic partnership combining Dannemann Siemsen's litigating expertise with the specialized crisis management knowledge of Moraes & Savaget for judicial and extrajudicial reorganization matters.
ANGARDI - National Association for the Guarantee of Intellectual RightsminorStrategic or Co-development PartnerCollaboration on training courses for public authorities in Federal, State and Municipal spheres to increase the quantity and quality of actions taken by surveillance and repression bodies in IP protection.
International Associate NetworkcoreChannel Partner/ Reseller/ DistributorExtensive network of associates in more than 150 countries in the main global markets for international trademark and patent services, enabling effective international assistance at optimized costs.

Scale indicators6 records

Recent moves2 records

Expansion highlights6 records

Dannemann Siemsen competitors and assessment

Company assessment

Direct peers

Kasznar Leonardos: Brazilian intellectual property law firm founded in 1923, also recognized as one of the leading IP boutiques in Brazil and Latin America. Directly comparable to Dannemann Siemsen as a heritage Brazilian IP specialist serving similar patent, trademark, and litigation mandates.
Momsen, Leonardos & Cia. Brazilian intellectual property law firm with deep patent and trademark prosecution expertise across multiple technical disciplines. Directly comparable to Dannemann Siemsen as a top-tier IP specialist serving multinational clients in Brazil.
ClarkeModet: Largest pure-play IP services firm in Latin America and Iberia, with patent and trademark prosecution across 10+ countries. Directly comparable to Dannemann Siemsen in cross-border IP prosecution, especially as a regional competitor for Latin America-focused IP mandates.

Broad incumbents

Mattos Filho: One of the largest full-service Brazilian law firms with a recognized IP practice among its broader corporate, regulatory, and litigation offerings. Comparable to Dannemann Siemsen as a top Brazilian firm competing for IP mandates, though not IP-specialized.
Pinheiro Neto: Premier Brazilian full-service law firm with a strong IP and technology practice serving major multinationals. Comparable as a top-tier Brazil-based competitor for IP advisory work, though broader in scope than Dannemann Siemsen's IP-only focus.
Demarest Advogados: Large Brazilian full-service firm with a credible IP, technology, and data protection practice. Comparable to Dannemann Siemsen as a competitor for cross-disciplinary IP and technology mandates from enterprise clients in Brazil.
Bird & Bird: Global law firm widely recognized as a leading IP and technology practice, with a growing presence in Brazil. Comparable to Dannemann Siemsen as an international competitor for high-value IP mandates involving Brazil-based multinationals.
Hogan Lovells: Global law firm with a top-tier IP practice and a substantial Brazil office. Comparable as an international incumbent competing with Dannemann Siemsen for global IP portfolios with material Brazil exposure, particularly in life sciences and tech.
Baker McKenzie: Global law firm with a leading IP practice and one of the largest Brazil operations of any international firm. Comparable to Dannemann Siemsen as a competitor for cross-border trademark portfolio management and IP litigation involving Brazilian entities.

Regional players

Garrigues: Leading Iberian (Spain/Portugal) and Latin America law firm with a strong IP practice headquartered in Spain. Comparable to Dannemann Siemsen as a regional competitor for Latin America and Lusophone IP mandates, though primarily operating from a different home jurisdiction.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

Dannemann Siemsen compliance and trust

Trust signal

Compliance6 records

Dannemann Siemsen financial estimates

Financial estimate

Revenue estimate

Valuation estimate

Dannemann Siemsen leadership team

Management profile

Number of profiles

Profiles12 records

Dannemann Siemsen subsidiaries and ownership

Company hierarchy

Subsidiaries1 record

Dannemann Siemsen funding detail

Funding detail

Funding overview

Funding rounds

Investors

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

Dannemann Siemsen M&A and investment

M&A and investment

M&A

Investments

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

Frequently asked questions about Dannemann Siemsen

What does Dannemann Siemsen do?

Is Dannemann Siemsen a public or private company?

Dannemann Siemsen is a private company. It is classified as management employee owned and is currently operating.

When was Dannemann Siemsen founded?

Dannemann Siemsen was founded in 1900. It employs 501 to 1,000 people.

Where is Dannemann Siemsen based?

Dannemann Siemsen is headquartered in Rio De Janeiro, Brazil, in the Latin America region.

How does Dannemann Siemsen make money?

Three revenue lines are on record. Legal Advisory Services are the primary driver. The others are litigation Services and contract Services.

Who are Dannemann Siemsen's main competitors?

Direct peers on record are Kasznar Leonardos, Momsen, Leonardos & Cia. and ClarkeModet. Broad incumbents are Mattos Filho, Pinheiro Neto, Demarest Advogados, Bird & Bird, Hogan Lovells and Baker McKenzie. Garrigues is listed as a regional player.

Does Dannemann Siemsen have an API?

No public API is recorded for Dannemann Siemsen.

What industry is Dannemann Siemsen in?

Dannemann Siemsen's product category is Intellectual Property Law Services. Its primary akta.pro industry code is BPAHAMAL, Standards-Essential Patents (SEP) & FRAND Advisory. Its NAICS code is 541110 and its SIC code is 8111.