Lawyer profile
Dr. Otfried Guillaume
Intellectual property (trade marks, patents, designs) (Fachanwalt für gewerblichen Rechtsschutz), Commercial and company law (Fachanwalt für Handels- und Gesellschaftsrecht), Sina Maassen Partnerschaft von Rechtsanwälten mbB, Aachen
- Checked in the official register of the German Federal Bar (BRAK) on 21 October 2026
- Overall rating 4.1 of 5
, from 16 reviews of the firm
At a glance
- Languages
- English, French
- Focus areas
- Gesellschaftsrecht, Gewerblicher Rechtsschutz, Wettbewerbsrecht, Wirtschafts- und Unternehmensrecht
- Opening hours
- Montag 08:00 bis 17:00
- Dienstag 08:00 bis 17:00
- Mittwoch 08:00 bis 17:00
- Donnerstag 08:00 bis 17:00
- Freitag 08:00 bis 16:00
- Samstag geschlossen
- Sonntag geschlossen
Sources: Google, retrieved on 24 October 2026; Deutsche Anwaltauskunft des Deutschen Anwaltvereins, retrieved on 12 October 2026. Focus areas and opening hours are the lawyer's or firm's own words.
Location of the firm
Reviews of the firm
4.1 of 5 Overall rating from 16 reviews on 1 platform. How we calculate the overall rating
Google
These reviews apply to the firm, not to individual lawyers.
Details from the official lawyer register
- Name
- Dr. Otfried Guillaume
- Professional title
- Lawyer (Rechtsanwalt)
- Fachanwalt titles
- Intellectual property (trade marks, patents, designs) (Fachanwalt für gewerblichen Rechtsschutz), Commercial and company law (Fachanwalt für Handels- und Gesellschaftsrecht)
- Regional bar association
- Köln
- Admitted since
- 25 November 1988
- Firm address
- Aachener- und Münchener-Allee 1, 52074 Aachen
- Phone
- 0241-705870
- Fax
- 0241-7058787
- AC@Sina-Maassen.de
- Website
- www.sina-maassen.de
- Identifier in the special electronic lawyer mailbox (beA)
- DE.BRAK.8f4f6879-eb75-4bcb-a90b-e1e898f58e74.5e3c
Source: Official lawyer register of the German Federal Bar under section 31 of the Federal Lawyers' Act (BRAO). The register is kept in German. We show names and addresses as the register gives them and add an English description to German professional titles.
Law firm: Sina Maassen Partnerschaft von Rechtsanwälten mbB
Other lawyers at this firm
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