BlackBerry Limited
On March 8, 2018, Blackberry Limited sued Facebook Inc. in federal court in Los Angeles. According to BlackBerry Limited, Facebook has built swaths of its empire on the messaging technology which was originally developed by them during the time when the Facebook chief, Mark Zuckerberg, was still living in a Harvard University dorm room. Blackberry Limited alleges that many features of the Facebook messaging service infringe on Blackberry patents. In January 2021, BlackBerry jumps 20% after settling patent dispute with Facebook.