In general terms, product disparagement of goods is defined as a statement about a business or competitors goods which is untrue or misleading, such as bad reviews, and is made to influence or tends to influence the public not to buy goods or services. A falsehood that tends to denigrate the business, goods or services of another party. The right to free speech does not excuse this offense.
If this definition best describes your situation, send an Infringex removal demand letter to the author, publisher or blogger in question. Once they receive this demand letter, it will be clear to them that what they have blogged about your business is objectionable and they may not be protected by “free speech” and have caused you harm. Remove bad review now.
They will be asked to DELETE and REMOVE the blog, post or bad review, immediately.