A recent ruling by the German Federal Court of Justice (BGH) has reopened the possibility that using ad blocking software could violate copyright law in Germany. In a decision last month, the BGH – the final court of appeals on civil and criminal matters – partially overturned an appeals court decision in an 11-year copyright dispute brought by publisher Axel Springer against Adblock Plus maker Eyeo GmbH. The ruling says that the appeals court erred when it determined that the use of ad blocking...