Google support for alleged violation of copyright infringment takes you to filling up this form on this page:
However, you are required to report violation of a single specific URL.
This means if your blog has some 900 posts and all of them are plagiarised you need to fill up 900 forms. This is not helping at all.
I am sure Google advertisers are hurt if proper action is not taken by Google. If the whole blog is violated then Google should provide a means to report the violation as in my case:
My blog is: http://hodentek.blogspot.com and the Blogger blog which has violated the copyright is:
I have not given permission to the site owner (hodentekhyperloop2)