is suing online bookseller
, claiming that the company has infringed on several patents.
One of the five patents IBM cited covers data storage in an interactive network, and another deals with ordering through an electronic catalog.
Two lawsuits were filed. IBM said it was seeking unspecified damages, but a televised report indicated the amount would be at least $100 million. IBM said it filed the suits after nearly four years of trying to resolve its concerns with Amazon.com.
"We filed this case for a very simple reason. IBM's property is being knowingly and unfairly exploited," John Kelly III, senior vice president of IBM Technology and Intellectual Property, said in a statement.
IBM also said that Amazon "has shown no willingness to have meaningful discussions."