Copyright issues

Organizations used the Digital Millennium Copyright Act to demand that Google remove references to allegedly copyrighted material on other sites. Google typically handles this by removing the link as requested and including a link to the complaint in the search results.

There have also been complaints that Google's Web cache feature violates copyright. However, Google provides mechanisms for requesting that caching be disabled. Google also honors the robots.txt file, which is another mechanism that allows operators of a website to request that part or all of their site not be included in search engine results. The U.S. District Court of Nevada ruled that Google's caches do not constitute copyright infringement under American law in Field v. Google and Parker v. Google.

On September 20, 2005, the Authors Guild, a group that represents 8,000 U.S. authors, filed a class action suit in federal court in Manhattan against Google over its unauthorized scanning and copying of books through its Google Library program. Google states that it is in compliance with all existing and historical applications of copyright laws regarding books. The publicized contract between Google and the University of Michigan makes it clear that Google will provide only excerpts of copyright text in a search. The contract says that it will comply with "fair use", an exemption in copyright law that allows people to reproduce portions of text of copyrighted material for research purposes.

Google and Viacom, on July 14, 2008, agreed in compromise to protect YouTube users' personal data in the $ 1 billion (£ 497 million) copyright lawsuit. Google agreed it will make user information and internet protocol addresses from its YouTube subsidiary anonymous before handing over the data to Viacom. The privacy deal also applied to other litigants including the FA Premier League, the Rodgers & Hammerstein Organisation and the Scottish Premier League. The deal however did not extend the anonymity to employees, since Viacom would prove that Google staff are aware of uploading of illegal material to the site. The parties therefore will further meet on the matter lest the data be made available to the court.