BlackBerry on Friday announced it has filed a lawsuit in the Northern District of California against Typo, the maker of an iPhone keyboard case designed to slip onto Apple’s phones. The Canadian company argues the accessory violates its intellectual property rights, which it will protect from copying and infringement. “This is a blatant infringement against BlackBerry’s iconic keyboard, and we will vigorously protect our intellectual property against any company that attempts to copy our unique design,” Steve Zipperstein, BlackBerry’s General Counsel and Chief Legal Officer, said in a statement. “From the beginning, BlackBerry has always focused on offering an exceptional typing experience that combines a great design with ergonomic excellence. We are flattered by the desire to graft our keyboard onto other smartphones, but we will not tolerate such activity without fair compensation for using our intellectual property and our technological innovations.”