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German citizenship by descent - Guide by RA Tieben (Cologne). Parents, grandparents, great-grandparents. § 5 StAG deadline 2031, Art. 116 GG, dual citizenship since 2024
German citizenship by descent: Guide for applicants abroad

By Helmer Tieben, LL.M. (International Tax) - Cologne Bar Association

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Tenancy law: personal use also for the second home - is „culture and family“ enough?
LG Hamburg confirms: Use as a second home for cultural purposes
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Tenancy law: Keys in the letterbox - flat effectively returned?
Regional Court Essen: The posting of the flat keys in the letterbox of the
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Tenancy law: Termination in accordance with Section 573a BGB: No privileged cancellation without land register entry
Krefeld District Court strengthens tenant protection: Cancellation in accordance with Section 573a BGB only
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Written form in commercial tenancy law: What applies since BEG IV
Written form in commercial lease law: what applies since BEG IV?
One of the most important standards in commercial tenancy law is § 550 BGB, which
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German Embassy Islamabad
Humanitarian visas and admission declaration pursuant to Section 22 AufenthG: VG Berlin obliged to issue a new decision quickly
VG Berlin, decision of 6 January 2026 (41 L 763/25 V): No
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Livelihood for naturalisation Self-employment
Naturalisation despite self-employment: Cologne Administrative Court strengthens full-time gainfully employed persons - and clarifies the new exemption rule for securing a livelihood (Section 10 para. 1 sentence 1 no. 3 StAG)
Cologne Administrative Court, judgement of 16.10.2025 (11 K 3947/21): The court
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Naturalisation by declaration
Naturalisation by declaration under Section 5 StAG: Why „under German law“ can be a stumbling block when acknowledging paternity abroad
Cologne Administrative Court, judgement of 03.12.2025 (10 K 3833/23): The acquisition of the declaration
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Collective agreement grouping: Fixed-term contracts must not be a career barrier
ArbG Köln: Collective bargaining cut-off date regulations may not disadvantage fixed-term employees. Pre-employment periods
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Dismissal of a severely disabled person
Cancellation during the waiting period: prevention is not a „nice-to-have“
The ArbG Cologne clarifies: A prevention procedure according to § 167
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