On Monday, August 25, 2003, Amazon.com filed 11 lawsuits in the United States and Canada against deceptive online marketers who forge e-mail to make it look as though it is from Amazon.com. Through these lawsuits, Amazon.com seeks to restrain these defendants from sending e-mail forgeries falsely labeled as coming from Amazon.com. Amazon.com also seeks punitive damages in order to deter others from similarly fraudulent behavior.
Out of all the companies to infringe on they chose Amazon..
PDF file
http://images.amazon.com/media/i3d/01/amzn_eba.pdf
Its long but interesting read of actual papers served