One of the biggest sticking points in the authors' case revolves around the rights to millions of out-of-print books that are still protected by copyright but whose writers' whereabouts are unknown.
The prospect that Google could gain a digital monopoly on these so-called "orphan works" was one of the main reasons that the Justice Department and other objectors urged Chin to scotch the earlier $125 million settlement with publishers and authors. Chin rejected the agreement in 2010.
Google's stock increased $6.19, or nearly 1 percent, to $768.69 in afternoon trading Thursday.
AP writer Larry Neumeister in New York contributed to this story.
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