Winston Wong, the eldest son and estate administrator of deceased Taiwan petrochemicals tycoon Wang Yung-ching, sued two Hong Kong companies, claiming they misappropriated US$4 billion in assets.
The city's High Court named Wong administrator of his father's estate on May 2.
Wong filed a lawsuit yesterday against Jao Chien-fang and Chang Pen-yuan, formerly his father's financial advisers, as well as Hua Yang Investment (HK) and Winson International Investments.
He accused them of acting dishonestly to misappropriate his father's assets, and is seeking their return plus interest.
"This is an important and humbling moment as I stand in my father's shoes as administrator and continue the efforts to identify and recover everything that should have been declared in his estate," Wong said in a statement.
The suit adds to litigation Wong has filed in the United States, Taiwan, Bermuda and Hong Kong over Wang's holdings since his death in 2008 at 91.