Nokia seeks Blackberry sales bans

Blackberry devices could be forced off shop shelves if it does not agree to pay licence fees Continue reading the main storyRelated StoriesApple told to disclose HTC dealNokia's critical handset launchKodak faces patent ruling setback Nokia has asked courts in the US, UK and Canada to block sales of rival Blackberry smartphones.

It follows a patent dispute between the Finnish company and Blackberry's parent, Research In Motion (RIM).

Nokia says an earlier ruling means RIM is not allowed to produce devices that offer a common type of wi-fi connectivity until it agrees to pay licence fees.

RIM 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 - a possible signal that it might counter sue.

The clash is the latest in a series of legal distractions for the Canadian company at a time it is preparing to launch an operating system that could determine its survival.

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Nokia's action comes two months after an arbitration ruling by the Stockholm Chamber of Commerce in Sweden.

The organisation had been asked to act as an arbitrator in a dispute over RIM's use of handsets and tablets featuring wireless active network (WLAN) connections to the internet. All of RIM's current products use it.

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