The term inter partes is the
Latin for "between the parties" and it is the opposite of
in rem.
Lawsuits where all interested
parties have been served with adequate notices and are given a reasonable opportunity to attend and to be heard are referred to as inter partes proceedings or hearings. When a judgment is given, subject to any right of appeal, it would be inconvenient if the same issues could be endlessly relitigated by the same parties, so they are all bound by the result. However, anyone who was not a party to those proceedings and who can demonstrate a legitimate interest in reopening the issue, is entitled to petition the
court for the right to be heard. However, in some circumstances, the judgment is given in rem, i.e. it binds everyone whether they were a party to the case or not.
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