In a November 14, 2013 decision, Judge Denny Chin (continuing a case in which he presided before joining the Second Circuit) granted summary judgment in favor of Google, Inc in the long-running case by The Authors Guild, Inc. based on the fair use defense to copyright infringement. As part of its Google Books program, Google "has scanned more than twenty million books," "has delivered digital copies to participating libraries, created an electronic database of books, and made text available for online searching through the use of 'snippets.'" Since many of the scanned books are still under copyright, The Authors Guild, and three named plaintiffs brought a class action copyright infringement action. The parties cross-moved for summary judgment on Google's fair use defense.At the outset, Judge Chin assumed that the plaintiffs had made out a prima facie case of infringement, and that the sole issue for decision "is whether Google's use of the copyrighted works is 'fair use' under the copyright laws." The defense, which the defendant has the burden of proving, is codified at 17 U.S.C. § 107, and requires the consideration of four non-exclusive factors: "(1) the purpose and character of the use, including whether such use is of a commercial nature or is for nonprofit educational purposes; (2) the nature of the copyrighted work; (3) the amount and substantiality of the portion used in relation to the copyrighted work as a whole; and (4) the effect of the use upon the potential market for or value of the copyrighted work." The Court considered each of these factors in turn.