If Google is telling you “not enough information”, perhaps your DMCA notices to them are not in the right format. I have found different web hosts for example are much harder to work with to shut down a site, and require what they call a “properly formatted DMCA”, you'll find they have common guidelines printed on how they want the DMCA. My current DMCAs are structured to adhere to the strictest of these “properly formatted DMCA notices”.
You just can't send them a note saying these scammers stole our content, take it down.
Many web hosts want you to swear under penalty of perjury, they want electronic signature, tell them you are the copyright owner, etc. So they often ask us to include something like this:
"I have a good faith belief that use of the copyrighted materials described above as allegedly infringing is not authorized by the copyright owner, its agent, or the law. I swear, under penalty of perjury, that the information in the notification is accurate and that I am the copyright owner or am authorized to act on behalf of the owner of an exclusive right that is allegedly infringed."
I use that statement above. I also have my scanned in signature, and a typed digital signature with your name in between slashes, an email address and phone number for them to contact you.
I like to use screen shots side by side showing the offending site and arrows drawn to my site, showing exactly what they stole, because many of these abuse desk people cannot see the forest through the trees, and can’t read hundreds of words to find a few copied sentences. You have to show them.
I give them the exact offending URL,
and the exact URL from our site where they stole the content from.
You have to hand it to them on a platter.
I used to fax Google our DMCA notices, but quit doing it because they don't act on all of them, and it's double work doing a separate DMCA for Google. Remember, Google wants YOU and ME to do their dirty work for them. They don’t want to waste time all day long answering thousands of DMCAs from around the world.
Again, my solution that I pointed out above works best. Even Google suggests you "work with the webmaster to remove your copyright content", which is ridiculous. To me it's lot easier and faster to just get the darned web site shut down, and the index will take care of itself.
I just send my DMCA to the scraper’s web host, get the site shut down, then submit the dead site to Google's URL Removal tool, and within 2 weeks the site is out of the index. Done deal, no extra DMCAs to waste Google’s time, use all the automation that you can. If a scraper site has been shut down, Google’s tool will never come back and say “not enough information”. If the site is down, Google will kick them out. It's that simple folks, a simple matter of physics. If the site is gone, it can't be crawled and indexed. It's like their algorithm says "if it ain't there, it aint staying in our index".
It's fast, easy, and effective. Try my method I perfected over the last several years, and you'll save time that you would have sent DMCAs to Google, to instead get more of your scraper sites shut down.
Sometimes I have gotten sites shut down within minutes of sending the DMCA to the abuse desk. Just had one of those yesterday. Makes your day go real well!
Happy shooting and looting!