Google and Yahoo are among companies that are expanding the use of a strategy to fight patent suits that shuns the courtroom in favor of government reviews.
The battlefield opened last year when the two Internet giants, hit with a lawsuit demanding royalties by Paul G. Allen’s Interval Licensing, got the case put on hold after asking the U.S. Patent and Trademark Office to scrutinize the patents’ validity. Google took the same approach against Oracle, and TiVo is challenging a Microsoft case in a similar fashion.
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