Nokia pushes for Blackberry sales bans after patent dispute

  • Nokia has requested courts in the United States, United Kingdom and Canada to block sales of rival Blackberry smartphones.

    The move follows a patent dispute between the Finnish company and Blackberry maker Research In Motion (RIM).

    According to Nokia, a previous ruling means that RIM is not allowed to produce devices featuring the wireless active network (WLAN) until it pays licence fees. All of RIM's current products use it.

    RIM on Wednesday said it would respond to Nokia "in due course".

    "Research In Motion has worked hard to develop its leading-edge Blackberry technology and has built an industry-leading intellectual property portfolio of its own," it said in a statement.

    The row is the latest in a series of legal disputes for the ailing Canadian company and comes as it prepares to launch an operating system that could determine its future.