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For a company that makes no products, Acacia Research  spends a lot of time fighting over patents in court. Acacia has filed at least 337 patent-related lawsuits in its 18 years.

Acacia acquires patents from inventors and then seeks fees from companies that it says infringe on those patents. Because Acacia licenses technologies it doesn’t design or distribute, it is known as a “nonpracticing entity.”

Read More [BusinessWeek]

Tsera Sues Companies

More than twenty companies including Microsoft and Apple are being sued this week by the company Tsera due to alleged patent infringements incurred by using touchpad interfaces.

The Texas based Tsera was issued with the patent in question back in 2003 after applying for it in 1999. It covers, “Methods and apparatus for controlling a portable electronic device using a touchpad”.

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