Over the last 20 years, the number of disposed cases more than doubled, from 1,013 in 1986 to 2,362 in 2004. The rates of adjudication dipped a bit during this time, going from 19% to 14% during the same period (settlements went from 81% to 86%).
Another interesting statistic from the study, the eBay decision bumped the rate of denials from 16% to 25%.
One statistic I wanted, but could not find, was the average cost of going to trial on a patent infringement lawsuit. Although Peter notes that it costs an average of $4.2 million to try a patent case where the damages are alleged to be in excess of $25 million, I would guess the overall average is substantially less.
Be sure to check out Peter’s post, which also has a link to Paul Janicke’s PowerPoint presentation on the topic.