yep, here's some examples illustrating your point (or more):
http://www.us.design-reuse.com/news/7590/intergraph-reaches-patent-settlement-amd-license-terms-include-10-million-cash-payment-up-5-million-per-year-years.html
http://www.publicknowledge.org/node/758
http://www.itnews.com.au/News/NewsStory.aspx?story=17645