MinterEllison is a multinational professional services firm based in Australia. The firm has offices in five countries and 15 cities, including in every Australian capital city, London, Hong Kong, Shanghai and Ulaanbaatar. By number of Australian lawyers it is the largest provider of legal services in Australia. In the 2016 Acritas brand index, the Firm was named in the top 10 law firm brands in the Asia Pacific region, being regarded for "top-level litigation" and for "high-value work". Formerly known as Minter Ellison Lawyers, MinterEllison was a member of the Big Six leading Australian law firms before that term was superseded by a series of international law firm mergers. MinterEllisons origins can be traced back to 1827, when Frederick Wright Unwin was admitted to practice in New South Wales. Its first international office was opened in London in 1974, and its roots in China date back to the 1980s, when it was part of the Beijing Interjura consultancy (1987-1993) and though a co-operation agreement with Great Wall Law Firm (the law firm of Chinas Ministry of Foreign Economic Relations and Trade) signed in 1990.