Blackberry – the former phone giant – has sued Facebook – the largest social media platform in the world – in LA this week over their messaging service. The lawsuit is targetting facebook and Facebook-owned Instagram and Whatsapp. It came after what BlackBerry said was “several years of dialogue” with the social network. The suit isn’t available online yet.

Although BlackBerry is not predominately focusing on mobile phones anymore, they are not stopping fighting their intelelctual property rights.

The lawsuit targets messaging apps similar to the original BlackBerry Messenger  (BBM).  BBM is/was a secure way to exchange text and images and an early competitor to the likes of WhatsApp. BBM was an attractive form of global communication, particularly in countries where text message rates were high. In the years since, Facebook and its subsidiaries have become go-to services replacing many of BBM’s functions. Facebook alone is the world’s largest social network, with more than 2 billion people logging in each month. WhatsApp, meanwhile, has become a de facto text message replacement, garnering 1.5 billion active users, according to data compiled by Statista. And don’t forget Instagram, with photo sharing and messaging that attract more than 800 million people each month.

Blackberry said in a statement to Reuters: “As a cybersecurity and embedded software leader, BlackBerry’s view is that Facebook, Instagram, and WhatsApp could make great partners in our drive toward a securely connected future, and we continue to hold this door open to them.”

In response, Facebook noted that “Blackberry’s suit sadly reflects the current state of its messaging business,” said Paul Grewal, deputy general counsel for Facebook. “Having abandoned its efforts to innovate, Blackberry is now looking to tax the innovation of others. We intend to fight.”