Why is Blackberry suing Facebook?

It seems like the social media giant Facebook problems are not going to over. After recently, paying a $35 million law-suit to its investors they are again in trouble because Blackberry has filed a lawsuit against them and its other WhatsApp and Instagram apps.

Blackberry is alleging that Facebook and its subsidiaries, WhatsApp and Instagram have copied technology and features from the Blackberry most popular Blackberry Messenger.

Blackberry, Chief Excecutive John Chen's said in a statement that a case has been filed against Facebook over patent infringement and he further added Facebook has made a lot of money by copying their features. Blackberry smartphones used to dominate the market once and their Blackberry messenger app was everyone's favorite.

However, Facebook Deputy General Counsel Paul Grewal said in a statement that the company intended to fight the lawsuit and he took a dig at Blackberry, "after failing efforts to innovate, Blackberry is looking to capitalize on other's success''.

Here's the official remark on that from BlackBerry representative:

"As a cybersecurity and inserted programming pioneer, BlackBerry's view is that Facebook, Instagram, and WhatsApp could make extraordinary accomplices in our drive toward a safely associated future, and we keep on holding this entryway open to them. Notwithstanding, we have a solid case that Facebook has encroached on our licensed innovation, and following quite a while of discourse, we additionally have a commitment to our investors to seek after suitable legitimate cures."