Reviews general terms and conditions for validity under German law. Detects invalid clauses and violations of §§ 305-310 BGB.
This skill systematically reviews standard business terms (Allgemeine Geschäftsbedingungen, AGB) for validity under §§ 305—310 BGB. German law on standard terms follows a three-layer review:
Review each layer in sequence. If a clause already fails at the incorporation stage, the content review is unnecessary.
Important: Individually negotiated terms always take precedence over standard terms (§ 305b BGB) — even an oral agreement overrides a written standard clause. Therefore, always check first whether an individual agreement exists.
Standard business terms are all contract terms pre-formulated for a multitude of contracts that one party imposes on the other at the time of contracting.
Check for the following elements:
Distinguishing individually negotiated terms: An individual agreement exists only if the drafter genuinely offered the clause for negotiation and the other party had the opportunity to influence its substance. The burden of proof lies with the drafter (§ 305 para. 1 sentence 3 BGB).
Standard terms only become part of the contract if all three requirements are met:
Online specifics:
| Method | Valid? | Reasoning |
|---|---|---|
| Click-wrap (checkbox + link to full text) | Yes | Express consent + opportunity to review |
| Browse-wrap (terms linked in footer, no active consent) | No | No express reference, no provable consent (BGH NJW 2006, 2976) |
| Sign-in-wrap (notice at registration: “By registering, you accept…”) | Borderline | Only valid if sufficiently prominent and linked |
Offline specifics: For oral or telephone contracts, the drafter must provide the terms before the contract is concluded. Sending them afterwards (e.g., on the invoice) is insufficient.
Note for B2B: § 305 para. 2 does not apply to businesses (§ 310 para. 1 sentence 1 BGB). Here, a reasonable opportunity to review is sufficient. Tacit incorporation through industry custom is possible.
§ 305c para. 1 — Surprising clauses: Provisions that are so unusual under the circumstances that the other party need not expect them do not become part of the contract.
Check for the element of surprise:
Typical examples of surprising clauses:
§ 305c para. 2 — Ambiguity rule (contra proferentem): Doubts in interpretation are resolved against the drafter. If a clause allows two readings, the more customer-friendly interpretation applies.
These clauses are per se invalid — there is no room for judicial discretion. Review the following key provisions:
| No. | Prohibition | What to check | Most common error |
|---|---|---|---|
| No. 5 | Liquidated damages | The clause must expressly allow the customer to prove that the actual loss was lower | Missing right to prove lower damages |
| No. 6 | Contractual penalties | The clause must be proportionate; no contractual penalty for mere payment obligations | Contractual penalty for late payment |
| No. 7a | Liability exclusion for personal injury | Liability for personal injury can never be excluded | ”Liability for damages of any kind is excluded” |
| No. 7b | Liability exclusion for intentional or grossly negligent conduct | Liability for intent and gross negligence can never be excluded | Blanket liability exclusion without differentiation |
| No. 8 | Warranty rights | No unreasonable shortening or restriction; for new goods, the limitation period must not be less than 1 year | Warranty exclusion for new goods |
| No. 9 | Contract duration and notice periods | Maximum initial term of 2 years; since 01.03.2022 for B2C: after the initial term, the consumer can cancel at any time with 1 month’s notice (no automatic renewal exceeding 1 month) | Automatic 12-month renewal under pre-reform practice |
| No. 12 | Reversal of the burden of proof | No shifting the burden of proof to the customer’s disadvantage | ”The customer must prove that the defect existed at the time of delivery” |
| No. 13 | Form requirements | Since 01.10.2021: cancellation in text form (§ 126b BGB) must be sufficient; requiring written form (Schriftform, § 126 BGB) for cancellations is invalid | ”Cancellation requires written form” instead of text form |
These clauses are invalid insofar as they are unreasonable — here, the court has discretion.
| No. | Prohibition | Permissibility threshold |
|---|---|---|
| No. 1 | Unreasonably long deadlines for acceptance or performance | The deadline must be objectively justified and industry-standard; in e-commerce: a delivery period exceeding 30 days without a specific reason is problematic |
| No. 4 | Modification reservation | The right to modify must be specifically described (which service features, to what extent, for what reason); the core performance (what the customer pays for) must be preserved; the BGH requires disclosure of the reasons for modification (BGH NJW 2021, 1752) |
| No. 5 | Deemed declarations (silence as consent) | Only valid if the customer is given a reasonable deadline and is expressly informed of the consequences of silence at the start of that period |
| No. 7 | Unwinding after withdrawal | The drafter may not demand unreasonable compensation for use or depreciation |
| No. 8 | Set-off prohibition | Only valid if limited to undisputed or legally established counterclaims |
The catch-all provision for all clauses not already covered by §§ 308, 309. A clause is invalid if it unreasonably disadvantages the other party.
Three pillars of review:
a) Transparency requirement (§ 307 para. 1 sentence 2):
b) Guiding principle of default law (§ 307 para. 2 no. 1):
c) Cardinal obligations (Kardinalspflichten) (§ 307 para. 2 no. 2):
Valid liability clause structure:
In business-to-business transactions, the following deviations apply:
What is additionally permissible in B2B (compared to B2C):
What is regularly invalid even in B2B:
No partial enforcement to the permissible extent (keine geltungserhaltende Reduktion). This is the central principle: An invalid clause is not reduced to the maximum permissible scope. Instead:
Severability clauses that attempt to replace invalid clauses with the “nearest valid alternative” (so-called replacement clauses) are themselves invalid because they circumvent the prohibition on partial enforcement (BGH NJW 2018, 2950). Pure preservation clauses (“The contract remains valid in all other respects”) are unproblematic, as they merely restate § 306 para. 1.
| Clause | Reason for invalidity | Provision |
|---|---|---|
| ”Liability for damages of any kind is excluded” | Covers personal injury and gross negligence | § 309 No. 7 |
| ”Cancellation requires written form” | Text form is the maximum requirement since 01.10.2021 | § 309 No. 13 |
| ”The contract renews automatically for 12 months” (B2C) | Maximum one-month renewal after the initial term since 01.03.2022 | § 309 No. 9 |
| ”Place of jurisdiction is [drafter’s registered office]” (B2C) | Impermissible choice-of-forum clause with consumers | § 38 ZPO in conjunction with § 307 BGB |
| ”We reserve the right to modify the service at any time” | Too vague, no specificity, core performance not preserved | § 308 No. 4 |
| ”Upon receipt of the invoice, the service is deemed accepted” | Deemed declaration without notice and deadline | § 308 No. 5 |
| ”Warranty claims expire after 6 months” (new goods, B2C) | At least 1 year for new goods | § 309 No. 8 |
| ”Liquidated damages of 25% of the order value” (without right to prove lower damages) | Right to prove lower damages missing | § 309 No. 5 |
| ”Withdrawal only in written form and within 3 days” | Double violation: form requirement + shortened deadline | § 309 No. 13, § 307 |
| Severability clause with replacement mechanism | Circumvents the prohibition on partial enforcement | § 306 BGB |
This skill provides a structured preliminary assessment. For the following scenarios, we recommend consulting a lawyer at compound.law:
This analysis does not replace legal advice. The law of standard business terms is highly fact-specific — clauses that are valid in one context may be invalid in another.
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