Equifax is a huge corporation which is both good and bad. Bad because they've got limitless resources, good because they are a publicly traded corporation which makes them sensitive to valid lawsuits. Their business is also based on validating trustworthiness, which I think would also make them vulnerable to allegations of criminality and abuse of process. This is not a job for your typical small town lawyer. I think you need to do some research and find a big-ass New York-based law firm that knows how to find their short hairs and pull sharply.
They're also likely to have other large public corporations as clients using your technology ... an injunction against using your technology until the case is settled could prove extremely embarrassing and costly to them.
Equifax couldn't care less what the public thinks about them. They are frequently featured on sites like ripoffreport.com They target computer illiterates by offering them a free credit report. Not long after they get the free report, these people notice that they are being charged monthly fees for services that they didn't even know they signed up for. While not technically illegal, it is highly unethical and I wouldn't be surprised if a significant portion of their income came from scamming people who don't know better.
It can be argued that the people getting scammed are partly to blame because they didn't read the fine print. I agree to an extent but I also believe that if a business wants to succeed, they should do so on honest terms.
