Form I-751, Petition to Remove Conditions on Residence, is applicable when your conditional residence is based on your marriage or your parent’s marriage to a U.S. citizen or lawful permanent resident. The form is intended for conditional permanent residents to apply for removal of conditions on their permanent resident status and thus to become lawful permanent residents.
Form I-751 is a joint petition, if you are still married file it to USCIS together with your spouse through whom you obtained conditional status. However, there are exceptions to this joint filing requirement, for example, if you entered the marriage in good faith, but the marriage was later terminated due to divorce or annulment, or if your spouse died.
If you have dependent children who acquired conditional resident status on the same day as you or within 90 days thereafter, then include these children in Part 5 of Form I-751 in order to request that the conditions on their status be removed as well.
If you have dependent children who did not acquire conditional resident status on the same day as you or within 90 days thereafter, or if the conditional resident parent is deceased, then those dependent children must each file Form I-751 separately to have the conditions on their status removed.