Locals from Sabah wave Malaysian flags during the Malaysia Day celebrations marking Sabah's entry into Malaysia, in Kota Kinabalu September 16, 2012. With a general election due within seven months, the 13-party ruling Barisan Nasional coalition is bankin
Locals from Sabah wave Malaysian flags during the Malaysia Day celebrations marking Sabah's entry into Malaysia, in Kota Kinabalu September 16, 2012. With a general election due within seven months, the 13-party ruling Barisan Nasional coalition is banking on Sabah and neighbouring Sarawak state on Borneo island to prolong its 55-year grip on power. Reuters / Bazuki Muhammad

The heirs of a 19th century sultanate are seeking to seize Malaysian government assets around the world in a bid to enforce a $14.9 billion arbitration award they won against the Southeast Asian nation, despite a stay on the case handed by a French court, their lawyers told Reuters.

A French arbitration court in February ordered Malaysia to pay the sum to the descendents of the last Sultan of Sulu to settle a dispute over a colonial-era land deal.

Malaysia said on Wednesday the Paris Court of Appeal had stayed the ruling, after finding that enforcement of the award could infringe the country's sovereignty.

Law minister Wan Junaidi Tuanku Jaafar said the stay would prevent the award from being enforced as Malaysia works to set aside the ruling. Malaysia had not previously participated in the arbitration.

Lawyers for the claimants, however, say the February ruling remains legally enforceable outside France through the New York Convention, a U.N. treaty on international arbitration recognised in 170 countries.

"The 'stay' that seems to comfort the Malaysian government temporarily delays local enforcement in one country, France itself," said Paul Cohen, the heirs' lead co-counsel, of London-based law firm 4-5 Gray's Inn Square.

"It does not apply to the other 169."

With some exceptions, such as diplomatic premises, any Malaysian government-owned asset within nations party to the U.N. convention is eligible for the purposes of enforcing the award, said Elisabeth Mason, another lawyer for the heirs.

Wan Junaidi, the Malaysian law minister, declined to comment when contacted.

PETRONAS ASSETS HELD

The heirs claim to be successors-in-interest to the last Sultan of Sulu, who entered a deal in 1878 with a British trading company for the exploitation of resources in territory under his control - including what is now the oil-rich Malaysian state of Sabah, on the northern tip of Borneo.

Malaysia took over the arrangement after independence from Britain, annually paying a token sum to the heirs, who are Philippine nationals.

But the payments were stopped in 2013, with Malaysia arguing that no one else had a right over Sabah, which was part of its territory.

The claimants last week moved to seize two Luxembourg-based units of Malaysian state oil firm Petronas as part of efforts to enforce the award.

Petronas, which has described the seizure as "baseless", has said it will defend its legal position, adding that the units have divested their assets.

Lawyers for the heirs said the units were now under the control of bailiffs in Luxembourg, pending any appeal by Petronas against the seizure.

"We note Petronas' description of certain transactions, and we note their statement that those transactions are complete," Mason said.

"We will discover the full picture of all assets in due course."