Not only that, apparently they're claiming that the fact anything can be shared to an email on an iPhone and the fact that WhatsApp allows the user to share their chat history combine to become a violation.

> In the proceedings, the lawyers of both parties argued before the judge about complex technical details of the software, such as whether Whatsapp uses a technology on which Blackberry holds a patent when sending the entire "history" of a chat - i.e. the course of the chat - by e-mail to third parties. Or which parts of this process are executed by Whatsapps Software and which by the operating system iOS, for which Apple is responsible, not Facebook, but the manufacturer Apple.

From the deepl translation