TORONTO (Reuters) - Shares in Canadian patent licensing company WiLan Inc plunged almost 23 percent on Thursday after a jury ruled that Apple did not infringe a patent it held, leading several analysts to downgrade their view of the stock. The company, whose primary business is acquiring ownership of intellectual property and then seeking to charge fees to companies that make use of it, said it was disappointed by the court decision but that the patent in question only had three months of validity remaining. ...

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