Here's an example going back to the 80's when IBM shook down Sun[1]:
>> Finally, the chief suit responded. "OK," he said, "maybe you don't infringe these seven patents. But we have 10,000 U.S. patents. Do you really want us to go back to Armonk and find seven patents you do infringe? Or do you want to make this easy and just pay us $20 million?"
>> Finally, the chief suit responded. "OK," he said, "maybe you don't infringe these seven patents. But we have 10,000 U.S. patents. Do you really want us to go back to Armonk and find seven patents you do infringe? Or do you want to make this easy and just pay us $20 million?"
[1] http://www.forbes.com/asap/2002/0624/044.html