KoBold Makes Offer for Congo Lithium as Country Courts US, page-1822

Very easy to apply for an annulment: Any party can request annulment within 120 days of the award being issued.You just file the request and pay the fee, that’s it to get started.That’s why it’s so common (e.g., Pakistan did it in the Tethyan Copper case, even though they lost again).

But very hard to win. Most of the time it’s a delay tactic, delays the enforcement a couple of years and costs both sides hefty legal bills. It’s almost a given the DRC will apply to have it annulled if a judgement is made in AVZ’s favour.