Nuance Communications and its Tegic subsidiary have announced today that they have filed a patent infringement lawsuit against Zi Corporation in the Federal Court in Toronto, Canada. They assert that Zi’s Qix and eZiText products infringe Canadian Patent Numbers 2,399,961 and 2,278,549.
It is interesting to note that Zi had just rejected an all-cash $40.5 million takeover bid from the plaintiff.
According to the statement Nuance holds more than 1000 patents and patent applications.
Zi has retaliated with a press release.
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