COMESA Court Access and the Mauritius Polytol Cases
A procedural ruling opened a regional forum to a company that had already been turned away by domestic courts, while keeping the Court’s treaty mandate within defined limits.
Contents
Why this procedural ruling matters
The dispute behind the preliminary application
The jurisdictional questions before the Court
What the Court decided
The rule on access to the COMESA Court
How counsel framed the dispute
The later merits judgment and its limits
A comparison with regional court access
Practical lessons for companies and governments
The lasting value of Polytol
Why
this procedural ruling matters
Access rules can decide whether a regional
treaty has any practical force for a business. In Republic of Mauritius v
Polytol Paint and Adhesives Manufacturers Co. Ltd (Application 1 of 2012)
[2012] COMESACJ 13 (6 December 2012), the COMESA Court of Justice considered
whether a private company could bring a Treaty challenge against the state
where it operated, whether ending the disputed tariff had ended the case, and
whether national litigation shut the regional door. The decision matters
because it treated those questions as gateways to be answered by the Treaty
itself, rather than as reasons to insulate an alleged breach from review.
This article focuses on the preliminary ruling.
It does not confuse it with the later merits decision in Polytol Paints and
Adhesives Manufacturers Co. Ltd v Republic of Mauritius (Reference 1 of 2012)
[2013] COMESACJ 14 (31 August 2013). The 2012 Court did not decide whether the
customs duty violated COMESA law or what refund was due. It decided that the
claim could proceed. Keeping those stages separate is essential to
understanding both the precedent and the way regional economic litigation
works.
The
dispute behind the preliminary application
Mauritius had removed customs duties on
eligible COMESA-origin products in 2000. In 2001 it reintroduced a 40 per cent
duty on specified Egyptian imports, including Kapci paint products that Polytol
imported. The rate was later reduced and the duty was removed in November 2010.
Polytol said the levy had cost it money and was inconsistent with the COMESA
Treaty’s free-trade commitments. The underlying legal issue was regional: could
one COMESA member restore a customs charge on eligible goods from another member
after the common tariff arrangement required its elimination?
Polytol first sought relief in Mauritius. It
asked the Supreme Court for leave to bring judicial review, but on 15 April
2009 the court refused leave. The domestic court held that the application came
too late and that, without implementing legislation, the Treaty obligation was
not enforceable in that domestic proceeding. Polytol later sought a refund from
the Mauritius Revenue Authority, pursued review before the Assessment Review
Committee, and was unsuccessful. When it referred its Treaty claim to the COMESA
Court in February 2012, Mauritius objected before the merits hearing.
The state’s preliminary application argued, in
substance, that Polytol lacked standing to sue over a member state’s failure to
implement Treaty obligations, had not established jurisdiction, was not an
aggrieved party because the duty had been removed, and had not exhausted
effective domestic remedies. Those objections raised a fundamental tension: if
domestic law could not supply a remedy for the Treaty claim, should the
regional court nevertheless insist that the claimant continue through a
national route that had already refused to hear that claim?
The
jurisdictional questions before the Court
The central issue was how Articles 23 and 26 of
the COMESA Treaty applied to a private claimant. Article 23 gives the Court
jurisdiction over disputes concerning the interpretation and application of the
Treaty. Article 26 allows a natural or legal person resident in a member state
to refer the legality of an act or regulation of a member state to the Court on
the ground that it is unlawful or infringes the Treaty. Polytol was
incorporated and resident in Mauritius, a COMESA member. Its reference challenged
the tariff regulation and connected state conduct by reference to Treaty
obligations.
The state’s objections also tested the boundary
between Article 26 and Article 24. Article 24 provides an intergovernmental
route for a member state or the Secretary General to bring a matter about
another state’s failure to fulfil Treaty obligations. Mauritius argued that a
private firm could not repackage a general complaint about Treaty
implementation as an Article 26 challenge. The Court therefore had to
distinguish an individual challenge to the legality of an act affecting the
applicant from an abstract claim that the state had failed to perform its
duties to the organisation.
A separate question concerned timing and
continuing injury. By the date of the reference, the 40 per cent duty had been
withdrawn. But Polytol’s claim was not only about stopping a current charge. It
sought a ruling on the past levy and restitution of duties paid. The Court had
to consider whether the later withdrawal removed the company’s status as an
aggrieved party or made the legality question academic. The distinction between
prospective compliance and retrospective loss became practically important.
What
the Court decided
Lord Justice Tadesse delivered the Court’s
judgment. The Court dismissed Mauritius’s preliminary objections with costs to
Polytol. It accepted that the company was resident in a member state, had
challenged the legality of a regulation on Treaty grounds and had put forward
an actual commercial injury. The fact that the tariff had later been removed
did not erase the dispute over the period when it applied. Nor did the fact
that the company sought a financial remedy make the central issue a purely
domestic property dispute.
The Court treated Article 26 as a direct route
for an eligible legal or natural person to contest the legality of a member
state act or regulation under the Treaty. It also relied on Article 23 in
recognising its jurisdiction to interpret and apply the Treaty in deciding the
reference. The Court did not accept that a private applicant was barred from
bringing such a claim merely because Article 24 separately provides a route for
the Secretary General and member states to pursue intergovernmental enforcement.
These provisions address related but distinct forms of access.
On local remedies, the Court considered the
actual history rather than applying an automatic exhaustion formula. Polytol
had approached the Supreme Court, which rejected its Treaty-based case because
domestic legislation did not make the Treaty obligation enforceable in that
proceeding, and it had pursued an administrative refund process. The Court
concluded that the objection did not defeat the reference in those
circumstances. This is best read as a practical ruling grounded in the remedies
and record before it, not as a general rule that national procedures can always
be skipped.
The Court did not rule in December 2012 that
Mauritius had breached Article 46, nor did it order repayment then. It set the
reference down for determination on the merits. That procedural restraint is
part of the decision’s value: the Court protected the route to a hearing
without deciding disputed merits facts at the jurisdiction stage.
The
rule on access to the COMESA Court
The rule that can be drawn from the decision is
precise. A legal person resident in a COMESA member state may invoke Article 26
where it identifies a particular act or regulation of a member state, pleads
how that measure conflicts with an identified Treaty provision, and shows that
the issue affects its own interests. The end of a measure does not necessarily
defeat standing when the applicant alleges a continuing claim for relief
arising from the period in which it operated. The Court’s jurisdiction under
Articles 23 and 26 does not turn on whether a national court can give the same
Treaty remedy.
This does not transform the COMESA Court into a
general appeal court from domestic decisions. The applicant must connect the
challenged measure to a Treaty rule. A complaint that a regulator misapplied a
domestic tariff code, without a real Treaty question, would not become a COMESA
matter simply because the claimant uses regional vocabulary. The Court’s
mandate remains treaty-based: the claimant must show a credible connection
between state conduct and an obligation under the instrument, and procedural
gateways still matter.
Polytol also demonstrates that Article 26 is
not merely symbolic. If a private person could never bring a Treaty claim where
the challenged regulation had been repealed, the state could avoid regional
scrutiny by withdrawing a measure only after it had imposed losses. Conversely,
the Court must not decide hypothetical disputes without a claimant, injury and
a live remedial question. Polytol’s unpaid refund claim supplied that
continuing practical interest.
How
counsel framed the dispute
The judgment records Mr B. Madhub and Mrs F.
Maudarbocus Moolna for Mauritius and Mr Razi Daureeawo for Polytol. The
strongest part of Polytol’s case was its documented path: it identified the
regulation, the imports and the tariff period; wrote to the Finance Ministry;
went to the Supreme Court; sought an administrative refund; and placed the
denial of that refund before the COMESA Court. This evidence let the Court see
more than a theoretical disagreement about the Treaty. It showed the company
had tried to resolve a concrete loss through available channels.
Polytol’s lawyers also framed the reference as
a legality challenge under Article 26, not simply as a demand for compensation.
That choice addressed the statutory source of the Court’s authority. It made
the Treaty question visible: could the regulation stand consistently with the
duty-elimination commitments? The domestic court’s conclusion that the Treaty
was not enforceable without local implementing legislation helped explain why a
regional forum was necessary, but the reference still had to state the Treaty
breach with specificity.
Mauritius’s counsel raised serious threshold
questions. A state should be able to insist that private litigants do not use a
regional court as a substitute for unfinished local proceedings or as a forum
for claims that belong only to member states. The weakness was that the facts
were unusually favourable to Polytol on access: it had already sought domestic
judicial relief, received a ruling that blocked the Treaty argument, and
pursued an unsuccessful administrative refund claim. The state also relied heavily
on the withdrawal of the tariff, while the company’s claim for historical
repayment remained unresolved.
For future counsel, the lesson is not that one
party’s litigation strategy always wins. It is that courts need procedural
facts: residency, measure, dates, eligibility of goods, actual payment,
national remedies invoked, results, and what remains to be remedied. A claimant
without proof of residency or an identifiable Treaty measure would face a
different case. A respondent can sharpen its position by showing a meaningful,
available local route and explaining why the particular Article 26 claim falls
outside its text.
The
later merits judgment and its limits
The next stage confirms why the distinction
between procedure and merits matters. In August 2013 the Court decided the main
reference. It treated Article 46 as a distinct and operative commitment to
eliminate customs duties on goods eligible for COMESA treatment. It rejected
Mauritius’s argument that the longer timetable for completing the Customs Union
automatically postponed the specific duty-elimination obligation. The Court
found that reimposing customs duties on the Egyptian products breached Article
46 and ordered Mauritius to refund qualifying customs duties paid from 1 April
2005 to 20 November 2010, with interest under the prescribed Mauritian rate,
and to pay part of Polytol’s costs.
The merits judgment did not grant every
requested declaration. In particular, the Court dismissed Polytol’s broad
claims that Mauritius had breached the Treaty merely by failing to give it
domestic legal effect and by failing to give national courts general
jurisdiction over Treaty questions. The Court treated Article 24’s
state-to-state enforcement route as controlling for some general implementation
allegations, while Article 26 allowed the company to challenge a specific
measure affecting it. This narrower result is an important qualification to the
access precedent. Private standing was real but issue-specific.
The timeline also gives a useful litigation
lesson. A company can preserve an individual Treaty claim even after a
challenged rule is withdrawn if it can show an outstanding loss. But the remedy
still depends on the legal provision invoked and the evidence of payment,
product origin, eligibility and dates. In Polytol, the Court limited the refund
period to April 2005 onward, rather than simply refunding all duties since
2001. Anyone citing the case for restitution should explain this limitation
instead of saying that every levy was returned.
A
comparison with regional court access
Polytol is useful in comparison with the East
African Court of Justice, but the procedures should not be collapsed into a
single African regional rule. Article 30 of the EAC Treaty allows a person
resident in a Partner State to refer an alleged Treaty infringement by a
Partner State or Community institution to the EACJ, subject to a two-month
filing period from the alleged infringement. Mohochi v Attorney General of
Uganda (Reference 5 of 2011) shows how an individual can raise a state-conduct
claim under the EAC Treaty and Common Market Protocol. COMESA Article 26
instead speaks directly of the legality of an act or regulation and the
Treaty-infringement basis for review. Each court’s founding instrument
controls.
National constitutional review remains
important too. Mauritius’s Supreme Court considered the time limit and domestic
enforceability of the claim under local law. The COMESA Court did not overturn
the domestic ruling as an appellate court; it addressed a separate Treaty claim
within its own jurisdiction. In Mauritius, as in Uganda, Rwanda, Kenya and
Tanzania, practitioners must identify what domestic law provides, how a treaty
has been received nationally, and what the regional instrument independently
permits. A regional case may complement domestic proceedings without erasing
their rules or their factual findings.
Practical
lessons for companies and governments
For a company, the most useful preparation
begins before filing. Keep customs declarations, invoices, proof of tariff
payment, certificates of origin, classification decisions, correspondence with
ministries and revenue authorities, and records of domestic proceedings.
Identify the precise Treaty article and show how the measure contradicted it.
Explain whether a domestic remedy remains available, whether it can reach the
Treaty issue, and what damage remains after the measure ends. This evidence
supports standing, the merits and the remedy, rather than merely the narrative.
For government lawyers, a sound preliminary
objection should identify the jurisdictional text and show how the pleaded
facts fail it. If a measure is no longer in force, explain why no remedy
remains or why the particular claim is moot. If local remedies remain
available, identify them and show that they are capable of addressing the
substance of the Treaty complaint. A blanket assertion of sovereignty or a
general statement that national courts exist will not answer whether the
applicant has an effective route to the particular remedy.
For administrators, the case counsels against
relying on domestic implementation gaps as a shield. A regional obligation can
bind a member state even where internal mechanisms create uncertainty about its
enforcement by national courts. Governments should align tariff regulations,
customs practice and internal review procedures with their Treaty commitments.
They should also ensure that domestic law offers a transparent way to challenge
a measure and seek correction before a dispute becomes a regional case.
The
lasting value of Polytol
Polytol’s preliminary judgment is a procedural
authority with a practical economic consequence. It confirms that a resident
company may have a genuine voice in COMESA Treaty enforcement, that a withdrawn
regulation can remain reviewable where a concrete loss survives, and that the
relationship between local and regional remedies must be tested against the
actual history of the claim. The later merits judgment shows the limits: the
company still had to prove a specific Treaty breach, and the Court did not convert
every state implementation complaint into a private action.
The case is therefore most useful when a
commercial dispute involves an identifiable state measure and a Treaty rule
that protects cross-border trade. It helps counsel plan the route, plead the
right kind of claim and preserve proof. It also reminds public authorities that
integration obligations are operational legal duties. Businesses should not
assume that every disappointing customs outcome is a regional case, but when a
specific trade restriction conflicts with a defined COMESA rule, Polytol shows that
procedural objections need not close the door before the merits are heard.
Sources
Mentioned in This Article
Treaty establishing the Common Market for Eastern and Southern Africa, especially Articles 23, 24, 26 and 46. Republic of Mauritius v Polytol Paint and Adhesives Manufacturers Co. Ltd (Application 1 of 2012) [2012] COMESACJ 13 (6 December 2012). Polytol Paints and Adhesives Manufacturers Co. Ltd v Republic of Mauritius (Reference 1 of 2012) [2013] COMESACJ 14 (31 August 2013). Polytol Paints and Adhesive Manufacturers Co Ltd v The Minister of Finance 2009 SCJ 106. COMESA Council of Ministers, Legal Notice of 29 October 2000 on the elimination of customs duties.
Suggested Citation
Ronald Serwanga, “COMESA Court Access and the Mauritius Polytol Cases” East Africa Legal Insight (20 October 2026).