diberry - 5:50 am on Jul 22, 2013 (gmt 0)
I have a few pages on a Wordpress based site that continually get scraped. Google has always been quick to remove them when I file DCMA, and I have no idea why you're getting this sort of response.
I'm wondering if they're confusing ownership not with the scraper, but with the original URLs for this content. It might help to explain to them that this content was originally at this URL, then that one, then this one (or however it goes), but that these domains are all yours, copyright everything.