31 C.F.R. § 346.7
No judicial determination will be recognized which would give effect to an attempted voluntary transfer inter vivos of an Individual Retirement Bond. Otherwise, a claim against a registered owner will be recognized when established by valid judicial proceedings, but in no case will payment be made to the purchaser at a sale under a levy or to the officer authorized to levy upon the property of the owner under appropriate process to satisfy a money judgment unless or until the bond has become eligible for authorized redemption pursuant to these regulations. Neither the Department of the Treasury nor any of its agencies will accept notices of adverse claims or of pending judicial proceedings or undertake to protect the interests of litigants who do not have possession of the bond.
31 C.F.R. § 346.7