I was curious about the idea and did some Googling. Apparently some people have tried to use copyright to exclude evidence against them at trials. Citing a document at a trial doesn't usually reduce it's commercial value so Fair Use is typically the rule. The one exception in the page I found was when a lawyer commissioned the copyrighted work for one trial and then tried to introduce it in another trial without the permission of the copyright holder.
http://www.trademarkandcopyrightlawblog.com/2014/08/when-can...