Facebook Claims Ignorance Of Patent In 'Like' Button Suit

By Erica Teichert (May 17, 2013, 4:06 PM EDT) -- Facebook Inc. urged a Virginia federal judge Friday to throw out a patent-holding company's suit alleging that its "Like" button and other sharing features infringe two social media patents, saying the company hasn't proven Facebook knew about the patent before it was hit with the suit....

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