[killerswan]

I haven't seen statistics, but I know of many that have passed a reexam or two with flying colors.

[felipemnoa]

That is why he said that 80% are invalidated. The ones you heard about probably fall under the 20%.

Mr. Obvious to the rescue!

[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.