The USCIS may decide, based on the readjudication, to revoke the petition.
2.
It didn't even rule on the case before it, but sent it back ( to a lower court for readjudication ).
3.
During this readjudication process, the USCIS may issue a Notice of Intent to Revoke ( NOIR ) that plays a similar role as the NOID does for initial adjudication.
4.
An appeal can be made about a petition only after the USCIS officer adjudicating or readjudicating the petition has finished adjudicating, and only if the petition was denied ( for initial adjudication ) or revoked ( for readjudication ).