Standing: three questions before any merits argument
Every treaty claim turns on three threshold questions, and a state will contest all of them.
Is the claimant a protected investor? Nationality is determined by the treaty's own definition — incorporation, seat, or control — and a claimant that does not satisfy it has no case. Many treaties also carry a denial-of-benefits clause allowing the state to withdraw protection from a shell with no substantial business activity in its home state.
Is there a protected investment? Treaties define this broadly, but breadth is not infinity. A contractual entitlement, a concession, shares, and intellectual property usually qualify; a pure trading relationship or an unperformed contract often does not. Under ICSID there is an additional layer, since the claim must also be an investment within the Convention's own meaning.
Has the state consented? The treaty contains a standing offer to arbitrate, which the investor accepts by filing. Some treaties require a cooling-off period or a domestic-remedies step first, and skipping it is a jurisdictional gift to the respondent.
Choosing between ICSID and UNCITRAL
Where the treaty offers both, the choice is consequential.
ICSID is self-contained. The award is reviewed only through ICSID's own annulment procedure before an ad hoc committee, on narrow grounds, and for Contracting States it is enforceable as if it were a final judgment of their own courts. The national courts of the seat play no supervisory role, because there is no seat in the ordinary sense.
A non-ICSID claim, usually under the UNCITRAL Rules, behaves like a conventional international arbitration: it has a seat, the courts of that seat may set the award aside, and enforcement runs through the New York Convention with its grounds of refusal available to the state.
ICSID is generally the stronger enforcement position. UNCITRAL offers more procedural flexibility and is the only option where the host state is not an ICSID Contracting State.
The protection standards, and what they actually require
Fair and equitable treatment is the most invoked and the most argued. At its core it protects legitimate expectations founded on specific assurances, due process, and freedom from arbitrary or discriminatory conduct. It is not a guarantee against regulatory change, and tribunals have consistently declined to treat it as one.
Full protection and security is primarily about physical protection of the investment, though some tribunals extend it to legal security.
National and most-favoured-nation treatment prohibit discrimination against the foreign investor relative to domestic or third-state investors. MFN clauses are also used, contentiously, to import more favourable provisions from other treaties.
The umbrella clause, where present, elevates the state's contractual commitments to treaty obligations — turning a contract breach into a treaty breach.
Expropriation: the indirect kind is the one that is litigated
Direct expropriation — a formal taking of title — is rare and rarely contested on the facts. What is litigated is indirect expropriation: measures that leave title untouched while depriving the investment of its value.
Tribunals look at the economic effect on the investor, the degree of interference with reasonable investment-backed expectations, and the character of the measure. A bona fide, non-discriminatory regulation in the public interest is generally not compensable, which is the distinction states argue and investors resist.
Compensation is usually measured by fair market value immediately before the taking, and the valuation contest — discount rate, comparables, whether a young project has provable lost profits — frequently matters more to the outcome than liability does.
What the state will say
Expect jurisdictional objections before anything else: nationality, denial of benefits, whether the asset is an investment, whether the cooling-off period was observed, whether the claim is really contractual rather than treaty-based.
Expect an abuse-of-process objection if the structure was changed at any point near the dispute. Expect a fork-in-the-road argument if the investor has also gone to the local courts. Expect the state to run its regulatory measure as a legitimate exercise of police powers.
Preparation for all of this happens before filing. A claim assembled without a documented answer to each is one that spends its first two years on jurisdiction.
Enforcing an award against a sovereign
Winning and recovering are different problems. A state that does not pay voluntarily must be enforced against, and sovereign immunity from execution is a separate question from immunity from jurisdiction — a state can lose the arbitration and still resist execution.
Assets used for commercial rather than sovereign purposes are the usual target: trading accounts, state-enterprise assets, receivables. Central bank reserves and diplomatic property are generally protected. The practical work is identifying commercial assets across jurisdictions and choosing forums whose immunity law is favourable.
An ICSID award is materially easier here, because Contracting States undertake to enforce it as a final domestic judgment without the Convention's grounds of refusal being available.
The UAE on both sides of the treaty
The UAE has an extensive treaty network and appears in these disputes in two capacities. As a home state, UAE-incorporated investors may hold protection for investments abroad — which is a live consideration for the many regional groups structuring outbound investment through Emirati entities, and a reason to check the network before choosing a holding jurisdiction.
As a host state, the UAE has given treaty protection to inbound investors, and measures affecting them can found a claim.
For a UAE-based group the practical question is usually structural rather than contentious: does the current holding chain sit in a jurisdiction with a treaty covering the markets being entered, and if not, is there a legitimate reason to restructure now rather than after a problem appears.
| ICSID | UNCITRAL / non-ICSID | |
|---|---|---|
| Seat | No seat in the ordinary sense | A seat, with a supervisory court |
| Challenge route | ICSID annulment, ad hoc committee | Set-aside at the seat |
| Enforcement | As a final domestic judgment in Contracting States | New York Convention |
| Grounds of refusal available to the state | No | Yes — the Convention grounds |
| Availability | Host state must be a Contracting State | Wider |
Primary sources
The law and rules this page relies on. Links go to the issuing court, tribunal or legislator.
Frequently asked questions
Can I bring a treaty claim against a state?
Only if you are a protected investor, holding a protected investment, and the state has consented — usually through a standing offer in a treaty that you accept by filing. All three are contested as a matter of course, and the first is decided by how you structured the investment, years before the dispute.
Our holding company is in a jurisdiction with no treaty. Can we restructure now?
Restructuring once a dispute is foreseeable is generally treated as an abuse of process, and tribunals have declined jurisdiction on that basis. Protection has to exist before the trouble does. If no dispute is on the horizon, reviewing the holding chain against the treaty network of your target markets is exactly the right time.
ICSID or UNCITRAL — which should we choose?
Where the treaty offers both, ICSID is usually the stronger enforcement position: review is limited to its own annulment procedure and Contracting States enforce the award as a final domestic judgment, without the New York Convention defences. UNCITRAL gives more procedural flexibility and is the only route where the host state is not an ICSID Contracting State.
Does a change in regulation amount to expropriation?
Usually not by itself. Tribunals weigh the economic effect, the interference with reasonable investment-backed expectations, and the character of the measure — a bona fide, non-discriminatory regulation in the public interest is generally not compensable. Indirect expropriation claims turn on that distinction, and it is the central battleground.
What is 'fair and equitable treatment' in practice?
Protection of legitimate expectations founded on specific assurances, due process, and freedom from arbitrary or discriminatory conduct. It is the most invoked standard and the most argued. It is not a guarantee against regulatory change, and tribunals have consistently refused to read it as one.
We won. The state will not pay. What now?
Immunity from execution is a separate question from immunity from jurisdiction — a state can lose and still resist enforcement. The targets are assets used for commercial rather than sovereign purposes: trading accounts, state-enterprise assets, receivables. Central bank reserves and diplomatic property are generally protected. An ICSID award is materially easier to enforce.
How long does a treaty claim take?
Considerably longer than commercial arbitration — three years is a reasonable planning assumption and many run longer, particularly where jurisdiction is bifurcated. Costs follow, and third-party funding is common in this field for that reason.
Does a UAE company have treaty protection abroad?
Potentially. The UAE has an extensive treaty network, so a UAE-incorporated investor may hold protection for investments in treaty partner states. Whether it does depends on the specific treaty's nationality definition and any denial-of-benefits clause, which can strip protection from an entity with no substantial business in the UAE.