Canada’s BlackBerry is taking Nokia to court over claims of patent-infringement by the Finnish company’s mobile network products.

Nokia’s products including its Flexi Multiradio base stations, radio network controllers and Liquid Radio software use technology covered by as many as 11 patents, BlackBerry told a US federal court.

The mobile network products and services are provided to companies including T-Mobile and AT&T for their LTE networks, BlackBerry said in the complaint.

Nokia has persisted in encouraging use of the products without a licence from BlackBerry, it added.