Lawyer and notary profile
Daniel Martienssen
Lawyer (Rechtsanwalt), Civil-law notary (Notar), Kleifeld Martienssen Rechtsanwälte und Notar, Berlin
- Checked in the official register of the German Federal Bar (BRAK) on 13 October 2026
- Overall rating 4.5 of 5
, from 15 reviews of the firm
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- Languages
- English, Portuguese
- Focus areas
- Company law (Gesellschaftsrecht), Real estate law (Immobilienrecht), Inheritance law (Erbrecht), Family law (Familienrecht), Testament, Professional regulation law (Berufsrecht)
- Opening hours
- Monday to Friday 09:00-18:00
Sources: the firm's website, retrieved on 24 October 2026. Focus areas and opening hours are the lawyer's or firm's own words. Focus areas from the directories' fixed lists have an English label with the German term in brackets; all others stay in German.
Location of the firm
Reviews of the firm
4.5 of 5 Overall rating from 15 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
- Daniel Martienssen
- Professional title
- Lawyer (Rechtsanwalt)
- Regional bar association
- Berlin
- Admitted since
- 6 December 2012
- Law firm
- Kleifeld Martienssen Rechtsanwälte und Notar
- Firm address
- Mommsenstraße 46, 10629 Berlin
- Phone
- 030-86208092
- Fax
- 030-86208093
- martienssen@kmlaw.de
- Website
- www.kmlaw.de
- Identifier in the special electronic lawyer mailbox (beA)
- DE.BRAK.108fae90-33e1-4421-aebc-bedf6b8aa581.e51b
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.
Details from the register of notaries (Notarverzeichnis) of the Federal Chamber of Notaries (Bundesnotarkammer)
- Name
- Daniel Martienssen
- Official title
- Lawyer and civil-law notary (Rechtsanwalt und Notar)
- Official seat (Amtssitz)
- Berlin
- Chamber of notaries
- Notarkammer Berlin
- Appointed since
- 30 October 2020
- Office
- Mommsenstraße 46, 10629 Berlin
- Phone
- 030/862080-91/92
- Fax
- 030/862080-93
- info@kmlaw.de
- Website
- www.kmlaw.de
- Languages
- English, Portuguese
Source: Notarverzeichnis der Bundesnotarkammer (§ 78l BNotO), as of 28 October 2026. The register is kept in German.
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