Asia's richest woman, Nina Wang Kung Yu-sum, yesterday lost the latest battle with her father-in-law for control of the $27 billion Chinachem empire when the Court of Appeal upheld a ruling that her husband's will leaving her the company was forged. Mrs Wang now looks likely to take the civil probate hearing to the Court of Final Appeal - Hong Kong's highest court - in an effort to stop the company from falling into the hands of Wang Din-shin. It was not all bad news for Mrs Wang as the three judges of the Court of Appeal - Mr Justice Wally Yeung Chun-kuen, Madam Justice Maria Yuen Ka-ning and Mr Justice William Waung Sik-ying - unanimously rejected the finding by Court of First Instance judge Mr Justice David Yam Yee-kwan that two of the four documents purported to be the will were 'probably written by the defendant herself'. Mr Justice Yeung described the judge's finding as unreasonable and unsubstantiated. 'His inference - leading to a serious and important finding of fact possibly with far-reaching consequences - was haphazard and poorly supported,' Mr Justice Yeung said. This latest ruling is expected to be analysed by police who arrested Mrs Wang upon Mr Justice Yam's delivery and after Wang Din-shin raised fraud allegations in 1999. At the centre of the record-breaking 172-day trial before Mr Justice Yam, which ended on October 15, 2002 was a March 12, 1990 document that read: 'I Teddy Wang [Teh-huei] ... make this will so that after I die all of my property will be given to my wife, Nina Kung Yu-sum.' It was accompanied by three documents that claimed he hated his family and left everything to Mrs Wang, his 'one life, one love'. The will was made almost one month before Teddy Wang was kidnapped and never seen again. But Wang Din-shin, 91, claimed the 1990 documents were forged and produced a 1968 will that bequeathed the estate to him. Mr Justice Yam later ruled in his favour. Yesterday, Mr Justice Yeung and Madam Justice Yuen upheld the finding that Mrs Wang failed to prove the documents were her husband's will, and that the signatures on the 1990 documents were forged. Mr Justice Waung dissented. Chinachem was unavailable for comment yesterday. Administrators of Teddy Wang's estate are accusing Mrs Wang of having transferred his holding in Chinachem subsidiary Chime to herself.