Re: Invalid Clicks
As per my experience and what you write from -
You need to know the time duration of this Invalid Click Report. Does It Match The Adwords Report Time Duration.
Then if its matching the duration.
You need to read on the following links-
Whenever I face this problem, I send a request to the Google Team to sort it for me and they do it for us. Invalid Clicks is a part which wrests in the hands of Google Technology. You can take some measures. But for such cases, I prefer experts from Google Teams to work and sort.