[killerswan]

No, he asked a question, and I simply shared an anecdote. Do you have a link to proof for 80%?

("Obviousness" is not just a problem for patent examiners, I see.)

Some facts: http://www.uspto.gov/patents/stats/Reexamination_Information...

Ex parte re-exams result in 66% with claims changed and 11% with all claims canceled. Inter partes re-exams result in 43% with claims changed and 44% with all claims cancelled. Not bad.