https://patentlawauthority.com/ex-parte-reexamination/
Ex Parte Reexamination: Requesting USPTO Review of a Patent
Ex parte reexamination is a formal USPTO administrative proceeding that allows any party — including the patent owner, a third party, or the USPTO itself — to...
ex parte reexaminationrequestingusptoreviewpatent
https://www.uspto.gov/web/offices/pac/mpep/s2215.html
2215-Fee for Requesting Ex Parte Reexamination under 35 U.S.C. 302
ex parte reexamination
https://www.uspto.gov/web/offices/pac/mpep/s2226.html
2226-Initial Processing of Request for Ex Parte Reexamination Filed under 35 U.S.C. 302
https://www.uspto.gov/web/offices/pac/mpep/s2296.html
2296-USPTO Forms To Be Used In Ex Parte Reexamination
to beex parteusptoformsused