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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesLicensing & Marketing of Intellectual PropertyZurichE. Blum & Co. AG
E. Blum & Co. AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The company provides services in the field of intellectual property (IP), particularly in the areas of patent protection, trademark registration, design protection, domains, copyright, research, licenses, R&D contracts, disputes and IP strategies. It supports customers in various technology areas, including life sciences, mechanical engineering, materials science, mathematics, mechanics, medtech, microbiology and cell biology, microfluidics, molecular biology and biochemistry, nanotechnology, optics, pharmacy, physics, quantum computers and quantum processors.

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Products & services

Industry:Licensing & Marketing of Intellectual Property
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E. Blum & Co. AG

✓ Offered12
Patent protection
Advice in patent law, drafting and filing of patent applications, protection-rights strategy, Patentbox checks, as well as obtaining, defending and enforcing patents.
Trademark registrations
Assessment of registrability and availability, registration of trademarks in Switzerland and abroad, evaluation of conflict potential, as well as defence against attacks based on third-party trademark rights.
Design protection
Protection of the outward appearance of two- or three-dimensional objects, such as distinctive shapes, layouts or surface patterns, including issues related to design registration.
Licensing
Drafting licence agreements and arrangements for the transfer or assignment of protection rights and know-how, taking competition and antitrust law into account.
Searches
Trademark, state-of-the-art and freedom-to-operate searches, monitoring and patent landscape analyses, as well as evaluation and assessment of the search results.
Disputes
Leading lawsuits and defences in IP disputes, abuse assessments prior to legal action, as well as mediation and arbitration proceedings.
IP Due Diligence
Review of IP portfolios prior to transactions, identification and analysis of rights, risks and freedom to operate, as well as preparation of tailored due diligence reports.
IP strategies
Development and review of patent and trademark strategies, guidelines for filing, maintaining and enforcing protection rights as well as for freedom to operate, open source and licensing policy.
Administration of protection rights
Administration of protection-right portfolios, monitoring and payment of renewal and annual fees, and deadline tracking for time-limited protection rights.
Domains
Advisory and enforcement in disputes between trademark law and domain names, as well as dispute resolution proceedings before competent institutions.
Copyright
Advice on copyright-related disputes involving works of literature and art as well as computer programs, including technical assessments in specialized fields.
R&D contracts
Drafting contracts for research and development, for example commissioned research, contract development or joint R&D projects, including provisions on results, remuneration, IP and confidentiality.
Trust & reputation

ranQ Trust Score of E. Blum & Co. AG: 4.5 out of 5.0

Trust Score4.5/ 5.0

Excellent

x

Data basis 96% · As of October 2026

E. Blum & Co. AG scores 81.2 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.84.824%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.67.110%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.88.08%
E. Blum & Co. AG scores 92.3 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.82.07%
E. Blum & Co. AG scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
E. Blum & Co. AG scores 100.0 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.100.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

E. Blum & Co. AG reaches a ranQ Trust Score of 4.5 out of 5.0 — rated «Excellent». The rating draws, among other things, on 5.0 out of 5 stars from 13 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 13 reviews across all connected sources

Sources
GGoogle513
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Hofwiesenstrasse 349
8050 Zurich
Opening hours
Mon
08:00 - 12:00, 13:00 - 17:00
Tue
08:00 - 12:00, 13:00 - 17:00
Wed
08:00 - 12:00, 13:00 - 17:00
Thu
08:00 - 12:00, 13:00 - 17:00
Fri
08:00 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-107.825.798
Founded
1943 · 83 years
Last commercial register change
January 23, 2026
Employees
21 to 50
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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