In general, restrictive covenants are enforceable in New York to the extent that they protect the employer's "legitimate business interests". The leading case

In general, restrictive covenants are enforceable in New York to the extent that they protect the employer's "legitimate business interests". The leading case in NY last time I checked, a few years ago, was BDO Seidman, if you want to look that up on Google scholar. Usually if there's a noncompete case, there is also a trade secret misappropriation claim at the same time. So unfortunately there is little chance that a complaint based on overly broad noncompete would just be dismissed as a matter of law in NY, regardless of how stupid the thing is.