From MTO:

MediaTakeOut.com has learned that a LAWSUIT was filed earlier yesterday in theFEDERAL COURT in Manhattan by a woman claiming to be the SURROGATE - who gave birth to Blue IvyCarter.

The woman, named Tina Seals, is asking to have the judge declare HER to be the mother of Blue. She;s also asking for CUSTODY of Bey's daughter.

Bey's lawyers have yet to respond.