The court can make an order retroactive to the time the petition for child support was filed. If there is no proof on paper and the mother will not admit receiving funds it is doubtful your witnesses will save you. Good luck.
I have been a criminal attorney in New York for almost 25 years. website: Brooklynlaw.net Phone #: 718-208-6094 email: email@example.com. This answer is only for informational purposes and is not meant as legal advice.
If you did the DNA, the question then is whether you did the DNA in court. If yes, then there was presumably an order of filiation entered as well, declaring you (despite the birth certificate) to be the legal father of the child. Thus, you may wish to take a look at the court file for such an order. In any event, the Court may generally order support retroactive to the date of the filing of the petition. That said, I encourage you to schedule a follow-up consultation with a NYC Child Support attorney.
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