NEW YORK (

TheStreet

) --

Viacom

(VIA) - Get Report

is appealing a court's decision that

Google's

(GOOG) - Get Report

YouTube is protected against claims of copyright infringement after the video site hosted thousands of pirated clips.

The media company brought a $1 billion copyright case against YouTube in 2007 claiming that the popular video site was allowing users to upload and host material taken from Viacom outlets such as MTV, Comedy Central and Nickelodeon. In response, YouTube quickly began removing the illegal content.

In June, 2010, the court found that YouTube is protected against copyright infringement through the safe harbor provision of the Digital Millenium Copyright Act and ruled in favor of the video site.

Viacom filed the challenge on Friday, Dec. 3 in a New York federal appeals court.

-- Written by Theresa McCabe in Boston.

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