Under the statutory wording, the six month period starts only when the entitled party has learned both of the violation and of the identity of the liable party. A vague suspicion, anonymous advertisement or unknown operator cannot be reduced to a reliable starting date by description alone. The decisive issue is which exact facts were known and when.
Within a business, information may reach marketing, sales, management or the legal department at different times. The review file should record who received which evidence, which conduct it revealed and when the responsible person or company could be identified. A later general statement such as “known for months” is not precise enough.
Preserve emails, advertising reports, platform notices, screenshots, legal notice details and internal forwarding records in their original form. Add a factual chronology without retrospectively aligning different states of knowledge. Only then can the legally required knowledge be assessed.