Lawyer profile
Dr. jur. Claus-Peter Martens, LL.M.
Certified specialist in administrative law (Fachanwalt für Verwaltungsrecht), SAMMLER USINGER Rechtsanwälte Steuerberater Partnerschaft mbB, Berlin
- Checked in the official register of the German Federal Bar (BRAK) on 12 October 2026
- Overall rating 4.3 of 5
, from 22 reviews of the firm
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- Languages
- English, French
- Opening hours
- Monday 08:00 to 20:00
- Tuesday 08:00 to 20:00
- Wednesday 08:00 to 20:00
- Thursday 08:00 to 20:00
- Friday 08:00 to 19:00
- Saturday closed
- Sunday closed
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
4.3 of 5 Overall rating from 22 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. jur. Claus-Peter Martens, LL.M.
- Professional title
- Lawyer (Rechtsanwalt)
- Specialist titles
- Certified specialist in administrative law (Fachanwalt für Verwaltungsrecht)
- Regional bar association
- Berlin
- Admitted since
- 7 November 1991
- Law firm
- SAMMLER USINGER Rechtsanwälte Steuerberater Partnerschaft mbB
- Firm address
- Hardenbergstraße 28a, 10623 Berlin
- Phone
- 030-26395090
- Fax
- 030-2639509600
- claus-peter.martens@sammlerusinger.com
- Website
- www.sammlerusinger.com
- Identifier in the special electronic lawyer mailbox (beA)
- DE.BRAK.5c3a8062-1579-462b-a1bc-adcd5503764b.dc29
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.
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