Google has been getting a lot of flack lately, mostly because of the two-Internets plan it announced with Verizon last week, and its efforts to compete with Facebook. The latest challenge comes from Oracle, another Silicon Valley giant, which is suing Google for patent infringement.

In a complaint filed with the U.S. District Court for the Northern District of California, Oracle claims that Google’s Android system for mobile phones uses patented Java technology, which it acquired when it bought Sun Microsystems.

Altogether, Oracle argues, Google has infringed on seven of its patents. The lawsuit also contends that Google should have known this, since it hired a number of senior Sun engineers over the past few years.

Google spokesperson Andrew Pederson refused to comment on the lawsuit, saying that the company is still reviewing the charges.
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