My fellow blog writer at Know More Media, Brandon Hopkins posted on How to run an AdWords Invalid Clicks report - something that just got added to Google AdWords yesterday. You can read on the exact way you have to generate a report in order to get this data by reading his post.
However, I just tried it with two AdWords accounts I have access to and the options to generate this report don’t appear to be available yet.
We’ll have to check back later - or better yet, check in with Brandon Hopkins to find out when Invalid Clicks reports will be available to everyone.
There’s also a discussion on Traffick on the larger implications of allow advertisers to see the number of "Invalid" Clicks in their reports.