The unusual step out of the shadows by Myanmar Economic Holdings Ltd (MEHL) came as the sprawling mining-to-brewing conglomerate announced it had begun arbitration proceedings against Singapore-based food and beverage giant Fraser & Neave (F&N).
The row centres on MEHL's bid to buy F&N's 55 per cent stake in their joint venture Myanmar Brewery Limited (MBL).
MEHL said F&N had defaulted on a term in their joint venture deal after a change in the ownership structure following the Singapore group's takeover by Thai billionaire Charoen Sirivadhanabhakdi earlier this year.
MEHL, which was built by Myanmar's generals during their decades of iron-fisted rule, said the arbitration move "is not about the investment laws in Myanmar or how foreign investors are treated in the country".
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"We believe that allowing parties to exercise their contractual rights, including the right to arbitrate a dispute, will strengthen and not weaken foreign investors' confidence in Myanmar," MEHL deputy managing director Myint Aung said in the statement.
"We know it will serve the interest of some parties to politicise the dispute but doing so does no justice to the case or to anyone interested in investing in Myanmar."
The lifting of most Western economic sanctions has attracted international businesses, including Ford and Coca-Cola.
But experts say an opaque legal framework is one of a number of major challenges facing businesses entering the once-reclusive nation.
In an attempt to address their concerns, the country's reformist President Thein Sein last year signed into law an eagerly awaited foreign investment bill.
The former general has vowed to put the economy at the centre of a second wave of reforms, following dramatic political changes including the election of opposition leader Aung San Suu Kyi to parliament.