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German Telco Study 2026 · case-law map

Six BGH lines.

The supreme-court substance base for Compliance-GEO in four regulated consumer verticals: telecommunications, financial services, insurance, commerce. Six leading decisions between 2020 and 2025, one analogous-application line to the TKG, one regulatory hierarchy after Influencerin II, six confronted counter-lines. Empirical positioning in the German telco market; methodological test of transferability to the three other verticals.
NORTHBRIDGE
As of May 2026
CHAP. 13.6 / 14.5 / 14.7
This is not legal advice but a substance map. The classifications follow the prevailing interpretation as of the current substantive state (April 2026); a definitive case law on generative answer windows does not exist. The transfer to LLM-attribution configurations is the subject of legal validation. Regulatory state: UWG after the 2022 reform, TKG 2021 in the version of April 2026, PAngV § 11, DDG (former TMG), MStV (former RStV).
Headline statement

The supreme-court line on tariff advertising and platform liability has substantially condensed between 2020 and 2025. Completeness of material information, main-representation duty, interferer liability from awareness — three convergence pillars that carry the doctrinal basis for Compliance-GEO. A definitive case law on generative answer windows does not yet exist; the existing BGH lines can, however, per prevailing interpretation, after methodological review, be transferred to the Compliance-GEO context.

Sector applicability: The substance base acts in all four regulated consumer verticals. Telecommunications is the empirical research market; financial services carries the line via WpHG, FinDAG and VVG-InfoV; insurance via VVG § 7 and VVG-InfoV; commerce via PAngV § 11 and DSA Art. 6. In every vertical: material information belongs in the main representation, not in footnotes or follow-up pages.

Which six leading decisions carry the substance?

Chap. 13.6 · 2020–2025
01
BGH I ZR 96/19
25 June 2020
LTE speed
§ 5a (2) UWG (former version)
Advertising for telecommunications services with speed statements; unified subject matter under § 5 and § 5a UWG. Withholding of material information in telco advertising is unfair.
GEO relevance
Carries mandatory-information categories 13.5 and attribution under active telco advertising (Strand A, 14.6).
holds
Sector transfer Telco § 56 TKG speed duty. Finance § 14 WpHG conduct-of-business regulation effective-interest disclosure. Insurance § 7 VVG in conjunction with VVG-InfoV. Commerce § 6 PAngV quantity statement.
02
BGH I ZR 98/23
27 June 2024
climate-neutral
§ 5a (1) UWG
Advertising with unclearly defined environmental terms; completeness duty for ambiguous advertising statements. Clarification in the advertising statement itself, not on subsequent pages.
GEO relevance
Doctrinal basis for the completeness duty in tariff representations of generative answer windows.
holds
Sector transfer Definition duty for ambiguous advertising terms. Telco "5G flat", "unlimited". Finance "guaranteed return", "risk-free". Insurance "full cover", "premium". Commerce "organic", "climate-neutral", "fair".
03
BGH I ZR 164/23
11 July 2024
nicotine-containing liquids
§ 5a (2) sentence 1, (4) UWG (former) / § 5a (1), § 5b (4) UWG (new) · Art. 7 (5) Directive 2005/29/EC
Information duties for commercial communication; delineation of advertising-statement duty / pre-contractual duty. Union-law basis in the UCP Directive.
GEO relevance
Dividing line between advertising pre-communication and contractual information duty, central for the TKG classification in 13.5.
partial
Sector transfer The dividing line between advertising pre-communication and contractual information duty bites in Telco via TKG mandatory information, in Finance via WpHG advertising duties, in Insurance via VVG advisory duties, in Commerce via BGB / standard-terms control.
04
BGH I ZR 112/23
23 October 2024
online-marketplace liability
§ 10 TMG / Art. 6 DSA
Platform liability for infringing user uploads: interferer liability from awareness; perpetrator liability for systematic toleration. Loss of privilege under deliberate toleration.
GEO relevance
Attribution substance for model providers (Strand B, 14.6): interferer-liability analogy from awareness of a clear legal violation.
partial
Sector transfer Platform-interferer liability acts at comparison portals across all four verticals. Telco tariff comparators. Finance BaFin-supervised platforms. Insurance insurance comparators. Commerce DSA Art. 6 plus § 10 TMG.
05
BGH I ZR 53/24
23 January 2025
§ 5a continuation
§ 5a UWG (new version, 2022 reform)
Continuation of the information-duties line in the new UWG version; unified subject matter under multiple legal bases. Concretises the systematics of information completeness.
GEO relevance
Systematics confirmation post-reform; carries the continuity of § 5a doctrine across the reform cut-off.
holds
Sector transfer The fallback regulation of the 2022 UWG reform acts in all four verticals as a methodological anchor wherever sector-specific mandatory-information regulations (TKG, WpHG, VVG, PAngV) do not apply or leave gaps.
06
BGH I ZR 183/24
9 October 2025
Netto / price reduction
§ 11 (1) PAngV in conjunction with § 5a (1), § 5b (4) UWG · CJEU C-330/23 Aldi Süd
Lowest total price of the past 30 days in the main representation: unmistakable, clearly recognisable, easily legible. Footnotes do not suffice.
GEO relevance
Carries the main-representation duty in 14.5; analogous anchor for § 56 (1) sentence 2 TKG (see analogy block).
holds
Sector transfer Main-representation duty for price information. Telco § 56 TKG, twelve-month alternative. Finance effective-interest main representation. Insurance premium main representation. Commerce § 11 PAngV, 30-day lowest price (CJEU C-330/23 Aldi Süd).
Analogous-application line · Chap. 14.5

From the main-representation duty to the twelve-month alternative

Source decision
BGH I ZR 183/24
9 October 2025 · Netto
Lowest 30-day total price in the main representation: unmistakable, clearly recognisable, easily legible; footnotes do not suffice.
→
Analogous application
§ 56 (1) sentence 2 TKG
Twelve-month alternative
The existence of the 12-month alternative inside a 24-month advert as "material information" in the main representation, analogous to the PAngV main-representation duty.
Operational consequence: Hero-plus-box construction in the advertorial: the tariff core front-loaded in the first 30 per cent, TKG mandatory information in an immediately adjacent box at equal visual presence. Status of the analogy: A definitive analogy case law does not yet exist; the transferability is methodologically robust as of the current substantive state; the definitive classification remains for legal validation.
Four-sector applicability: The hero-plus-box logic is robust across sectors. In financial services as an effective-interest box next to the tariff core. In insurance as a premium-and-exclusion box next to the insurance headline feature. In commerce as a 30-day lowest-price box next to the promotional price. The analogy method remains identical; sector-specific are only the mandatory-information catalogues of the respective special regulation.
Regulatory hierarchy · Chap. 14.7

How does the lex-specialis cascade after Influencerin II bite?

Anchor decision · BGH I ZR 125/20 · 9 September 2021 · Influencerin II
Lex-specialis cascade DDG / MStV / UWG after BGH Influencerin II BGH ANCHOR · I ZR 125/20 Influencerin II · 09.09.2021 PRIMARY · DIGITAL SERVICE § 6 (1) (1) DDG Online media, portals, editorial web offerings PRIMARY · BROADCAST-LIKE § 22 (1) sent. 1 MStV Video advertorials, streaming platforms vs. only subsidiary only subsidiary FALLBACK · LEX GENERALIS § 5a (4) UWG only outside the DDG and MStV scopes SUPREME COURT PRIMARY SUBSIDIARY
Lex-specialis cascade after Influencerin II: DDG and MStV as primary regulations depending on media type; UWG as the subordinate fallback regulation. Cross-sector in all four regulated verticals.
Digital service
§ 6 (1) (1) DDG
Primary regulation for advertising disclosure in broadcast-free online media, portals, editorial web offerings (former § 6 (1) (1) TMG).
›
Broadcast-like
§ 22 (1) sentence 1 MStV
Primary regulation for video advertorials and streaming platforms within the MStV scope (former § 58 (1) sentence 1 RStV).
›
Fallback regulation
§ 5a (4) UWG
Subordinate; applies only to matters outside the DDG and MStV scopes. Lex-generalis position.
Operational consequence: The classifications of the disclosure variants V01 to V06 from Chap. 13.2 rest on this lex-specialis rule. A regulatory-concurrence error in the legal reasoning leads to mis-attribution of the duty source. The disqualification itself is untouched by this; the classification systematics, however, is material.
Four-sector applicability: The lex-specialis cascade DDG / MStV / UWG is media-specific, not sector-specific. It acts identically in Telco, Finance, Insurance and Commerce as soon as advertising is disseminated via digital services or broadcast-like platforms. Sector specifics only enter via the respective mandatory-information regulations (TKG, WpHG, VVG, PAngV).

Six counter-lines

Confrontation mode · position 7

The six leading decisions are not uncontested. The methodological review of the counter-lines (Northbridge case-law map, April 2026) shows three lines with partial robustness and three lines with minority status. The counter-lines do not invalidate the carrying line but sharpen the substantive state, marking the points at which a CJEU referral or an OLG divergence decision could shift the state after Q3/Q4 2026.

ID
Counter-line
Substance
Status
D.1
Full harmonisation of the UCP Directive
CJEU C-540/08 Mediaprint · 9 November 2010
National tightening beyond the harmonised level of protection is structurally limited; acts as a limitation argument against extensive § 5a interpretation.
partially robust
D.2
Platform host vs. own generation
against BGH I ZR 112/23 · LG Hamburg 324 O 461/25 "Grok"
Model providers generate actively, are not neutral hosts. The YouTube/Cyando doctrine does not apply directly; perpetrator liability when content is adopted as one's own per LG Hamburg.
partially robust
D.3
DDG privilege for LLM providers
§ 7 DDG / DSA Art. 4–8 · DFN legal office May 2024
Prevailing reading: the privilege does not apply for active answer generation (CJEU line on active role); the counter-reading remains a minority view.
Minority view
D.4
PAngV special regime
against the TKG analogy from BGH I ZR 183/24
BGH I ZR 183/24 relies on PAngV § 11 (1) as a special regulation; transfer to § 56 (1) sentence 2 TKG as a pre-contractual duty is not compelling.
partially robust
D.5
OLG Köln without BGH confirmation
OLG Köln 6 U 68/24 · 10 January 2025 (§ 54 TKG)
Market-conduct qualification of §§ 54 ff. TKG as a single OLG decision; without supreme-court confirmation a steelman anchor, not a settled line.
Minority view
D.6
OLG divergence on 24-month advertising
OLG Düsseldorf I-20 UKl 6/24 · 19 December 2024
Per OLG Düsseldorf, § 5a UWG does not establish an advertising duty to display the 12-month alternative simultaneously: divergence from the broad line of the 14.5 analogy.
partially robust
Three anchor lines

What stands robustly after the confrontation

  • Transparency ratio from BGH I ZR 183/24 via § 5a (1) UWG: the main-representation duty for material price information remains the carrying line, independently of the PAngV special-regime debate. Robustness · holds · base Chap. 14.5
  • Market-conduct qualification of §§ 54 ff. TKG per OLG Köln 6 U 68/24 carries the TKG mandatory-information categories from 13.5 even without BGH confirmation; steelman-strong enough for the classification systematics. Robustness · partial · base Chap. 13.5
  • Perpetrator attribution for own-generation per LG Hamburg 324 O 461/25 "Grok": the operator is liable for AI output adopted as own; operational basis for the Strand-A attribution. Robustness · provisional · base Chap. 14.6
Source anchors and positioning

BGH decisions

  • I ZR 96/19 · 25.06.2020
  • I ZR 125/20 · 09.09.2021
  • I ZR 98/23 · 27.06.2024
  • I ZR 164/23 · 11.07.2024
  • I ZR 112/23 · 23.10.2024
  • I ZR 53/24 · 23.01.2025
  • I ZR 183/24 · 09.10.2025

Regulations and Union law

  • UWG § 5a (1)/(4), § 5b (4)
  • UWG § 2 (1) (2), § 8 (2)
  • TKG § 55 (1), § 56 (1) sent. 2
  • TKG § 57 (4), §§ 54 ff.
  • PAngV § 11 (1)
  • DDG § 6 (1) (1), § 7
  • MStV § 22 (1) sent. 1
  • Directive 2005/29/EC Art. 7 (5)
  • CJEU C-330/23 Aldi Süd · C-540/08 Mediaprint

Study positioning

  • Chap. 13.6 · case-law connection
  • Chap. 14.5 · TKG modifier
  • Chap. 14.6 · Strand A / Strand B
  • Chap. 14.7 · regulatory hierarchy
  • NB retrieval analysis Opus 4.6
Northbridge German Telco Study · BGH case-law map
Source work: Retrieval procurement in the German telco market · northbridgesystems.de
Methodological context: Compliance-GEO definition · Codex Chap. 4 disclosure variants · About and Team
Methodological base · K&R / MMR / CR · bias discipline B1–B10
Contact · Imprint · Privacy

Six BGH lines plus one anchor decision Influencerin II carry the supreme-court substance base of Compliance-GEO. The line acts across sectors in Telco, Finance, Insurance and Commerce; the sector modifiers carry the mandate.

Law · BGH case-law map · as of May 2026 Chap. 13.6 · 14.5 · 14.6 · 14.7