Find the keywords he is ranking for and SEO pages on your own site (or another site you build) for those keywords. You can often get multiple page rankings for those keywords and push him off the top page with good SEO.
There really isn't any other way than starting your own reputation management campaign and building a few sites that promote your product and site in a good light. This may seem like a big project, but it sounds to me like it would be worth a couple hundred dollars to build some blogs (10-20) about your site, and run an SEO campaign targeting the keywords he went for.
My guess is he's not doing any kind of overly competitive linking to the bad reviews, so it should be a keyword that you can through some domain, IP, and anchor text diverse links to and outrank him in a couple weeks time.
Hope this helps. I know it sucks, but you can't let someone just come in and take ya down. Fight back.
I think for this issue you need to contract with google support team. They can help you.
have a look at knowitallreviews.com i found some good stuff there for marketing and seo
this is a tricky one , is this info any help
http://support.google.com/maps/bin/answe...
http://productforums.google.com/forum/#!...
http://www.successful-blog.com/1/negativ...
i bet this sort of thing happens all the time, google must have a complaints procedure for it.
look at knowitallreviews.com
it is usefull
My competitor has written bad reviews about my site and product; his some blogs and bad review’s URLs are showing in Google SERP via major keywords. It’s really hurting my business. Can anyone help me that how can I remove or down his bad reviews URLs from Google SERP?
