Legal action against sustainability or green claims (‘greenwashing’) is on the rise. Consumers and NGOs are increasingly seeking out legal avenues to hold companies accountable for allegedly misleading advertisements on sustainability. One of these avenues in the Netherlands is the Advertising Code Committee (ACC), which regularly handles complaints on greenwashing and other potential misleading statements.

On 24 May 2022, the Dutch Supreme Court passed judgment between, on one hand, the Royal Dutch Shell PLC and 15 of Shell’s in-house lawyers (“Shell”), and on the other hand, the Dutch Public Prosecution Service.1 The Supreme Court held that both Shell’s and the Public Prosecution Service’s complaints were inadmissible because the decision of the court of first instance should be considered as an ‘interim decision’ (in Dutch: ‘tussenbeschikking’), and interim decisions are not open to cassation. The Supreme Court took the opportunity to provide some insights in relation to the scope and application of legal professional privilege of in-house lawyers by way of obiter dictum.