Litigation involving the Wikimedia Foundation
The Wikimedia Foundation has been involved in several lawsuits. Some of them have been successful for the plaintiff, but others have been unsuccessful.
Verdicts in favor of the plaintiffs 
In May 2011, Louis Bacon obtained a court order against the Wikimedia Foundation to compel it to reveal the identity of the editors who defamed him on Wikipedia. However, the order was obtained in the UK, and is therefore unenforceable in the United States.
Verdicts in favor of Wikimedia 
Barbara Bauer, a literary agent, sued Wikimedia Foundation (which owns Wikipedia) for defamation. She claimed that a Wikipedia entry branded her the “dumbest” literary agent. But the case was dismissed because of the Communications Decency Act.
Professional golfer Fuzzy Zoeller, who also felt he was defamed on Wikipedia, did not sue Wikipedia because he was told that his suit would not prevail in light of the Communications Decency Act. He then sued the Miami firm from whose computers the edits were made, but later dropped the case.
In 2007, three French nationals sued the Wikipedia Foundation over a Wikipedia article that said they were gay activists. A French court dismissed the defamation and privacy case, ruling that the Foundation was not responsible for information in Wikipedia articles. The judge ruled that a 2004 French law limited Wikipedia's liability, and found that the references had been removed. He found that the Foundation was not legally bound to monitor or investigate the information on wikipedia, and that "Web site hosts cannot be liable under civil law because of information stored on them if they do not in fact know of their illicit nature." He did not rule whether the information was defamatory.
Sylvia Scott Gibson, author of Latawnya, the Naughty Horse, Learns to Say "No" to Drugs, sued Wikipedia for describing her book. Her suit was dismissed.
Other alleged defamation 
John Siegenthaler, an American writer and journalist, contacted Wikipedia in 2005 after his article was edited to incorrectly state – for four months – that he had been thought for a brief time to be involved in the assassinations of John Kennedy and Bobby Kennedy. He also published an angry op ed about the matter in USA Today. Siegenthaler called Wikipedia a "flawed and irresponsible research tool," and criticized the the protection the Communications Decency Act provided to Wikipedia.
DMCA takedown notices 
Texas Instruments sent a DMCA takedown notice to the Wikimedia Foundation because certain cryptographic keys were made public in the Texas Instruments signing key controversy article. A Wikipedia editor later filed a counter-notice, Texas Instruments did not reply in 10–14 business days as required by the DMCA, and the keys were restored to the article.
FBI seal controversy 
In July 2010, the FBI sent a letter to the Wikimedia Foundation demanding that it cease and desist from using its seal on Wikipedia. The FBI claimed that such practice was illegal and threatened to sue. In reply, Wikimedia counsel Michael Godwin sent a counter notice to the FBI claiming that Wikipedia was not in the wrong when it displayed the FBI seal on its website. He defended Wikipedia's actions and also refused to remove the seal.
See also 
- "US billionaire wins high court order over Wikipedia 'defamation'". The Guardian. May 9, 2011.
- "U.S. Law Protects Anonymous Speech, Not Billionaires". Forbes. May 10, 2011.
- "Wikipedia goes to court to defend defamation immunity". The Register. May 7, 2008. Retrieved April 15, 2013.
- Beaumont, Claudine (May 11, 2008). "Wikipedia fights defamation lawsuit". Telegraph. Retrieved April 15, 2013.
- "Bauer v. Wikimedia". Citizen Media Law Project. May 2, 2008.
- Beaumont, Claudine (May 11, 2008). "Wikipedia fights defamation lawsuit". The Daily Telegraph (London). Retrieved September 6, 2012.
- "Wikipedia cleared of defamation". The Inquirer. November 2, 2007. Retrieved April 15, 2013.
- "Wikipedia cleared in French defamation case". Reuters. November 2, 2007. Retrieved April 15, 2013.
- "FindLaw's Writ – Ramasastry: Is an Online Encyclopedia, Such as Wikipedia, Immune From Libel Suits?". Writ.news.findlaw.com. December 12, 2005. Retrieved April 15, 2013.
- "Letter from FBI to Wikimedia". July 22, 2010. Retrieved August 16, 2012.
- "Letter from Wikimedia to FBI". July 30, 2010. Retrieved August 16, 2012.
- Schwartz, John (August 2, 2010). "F.B.I., Challenging Use of Seal, Gets Back a Primer on the Law". The New York Times. Retrieved August 16, 2012.