Mallesons Stephen Jaques in
Sydney, Mallesons' Australian headquarters Mallesons Stephen Jaques was an Australian
law firm which originated in 1832 in
Western Australia and was one of the "
Big Six" law firms in Australia. 'Mallesons' derives from the name of the predecessor firm's founding partner; Alfred Brooks Malleson. Malleson was born at
Richmond Hill, on the
Surrey side of the
Thames in 1831. As a 25-year-old London solicitor he immigrated to Melbourne in 1856. Malleson's obituary in
The Argus in 1892 recorded that his expertise was especially "in company law and in the banking business. Several of the associated banks entrusted their legal affairs to the firm, as well as a large number of leading insurance and other companies, so that Mr Malleson had always as much as he could do". In 1858, the firm (then called "Muttlebury Malleson and Coster") handled the legal work to establish The National Bank of Australasia, which remains one of the firm's key clients as the present-day
National Australia Bank. The "Stephen" part of the firm's former name comes from Sydney founder Montague Stephen. He was the second son of Sir
Alfred Stephen, the
Chief Justice of the Supreme Court of New South Wales from 1844 to 1873. Montague Stephen founded a Sydney practice in 1849. One of his earliest (1853) clients was the "Australian Mutual Provident Society" (
AMP Limited) which remains one of the modern firm's key clients. The "Jaques" part of the firm's name comes from a second "Alfred" – Alfred Jaques. He became a partner of the Sydney firm in 1878. In 1888 the firm's name changed to Stephen Jaques & Stephen – a name which continued until the 1980s. The 1987 merger was driven by an assessment that Sydney and Melbourne had become one legal market. The merger enabled the firm to look after clients in Sydney, Melbourne, Perth and Canberra. In 1989, the firm opened an office in Brisbane. The firm opened a Hong Kong office in 1989, and a Beijing office in 1993. It established an alliance with Posman Kua Aisi Lawyers of
Port Moresby,
Papua New Guinea in 1995. In 2004 the firm strengthened its Beijing resources by taking on lawyers and support staff from
Denton Wilde Sapte. Later that year Mallesons merged with the Hong Kong and
Shanghai corporate boutique Kwok & Yih.
King & Wood Mallesons On 1 March 2012, the firm merged with the Chinese firm King & Wood PRC Lawyers to form
King & Wood Mallesons (KWM) following votes in November 2011. KWM in the following year in 2013 merged with UK
Silver Circle firm
SJ Berwin.
Mallesons In December 2025, KWM announced that their Chinese and Australian partnership will come to an end on 31 March 2026, with the law firm reverting to the pre-merger brands of "
King & Wood" and "Mallesons" for China and Australia respectively. Following the split,
King & Wood retained KWM's offices in China, Hong Kong, Japan, Canada, and the United States, whereas Mallesons had retained KWM's offices in Australia and Singapore. ==Notable alumni==