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BlackBerry's iconic keyboard patent has expired
(mobilesyrup.com)
This is a most excellent place for technology news and articles.
Nokia had quite a few, the E-line (e.g E6, E63, E71) being some of the most "blackberry" looking ones.
BB didn't have a patent on the idea of a keyboard on a phone, but they did (do?) have a design patent for one of the most optimal layouts and dancing around it was tricky and risky. Or you can just be Typo, directly rip off a BB keyboard, and act surprised when you get sued.