Norton Rose Fulbright has acquired Canadian firm Bull Housser, its third tie-up in the country following its combinations with Ogilvy Renault and Macleod Dixon five years ago.

The Vancouver firm has 90 lawyers, including 54 partners, according to its website and focuses on sectors including mining, infrastructure, real estate, maritime and technology.

The acquisition hands Norton Rose its sixth base in Canada alongside Quebec, Toronto, Calgary, Montreal and Ottawa. Bull Housser managing partner Janet Grove will remain head of the Vancouver office.

Grove said: "We have enjoyed good relationships with Norton Rose Fulbright over many years and believe that Norton Rose Fulbright reflects an approach to service and has a culture of diversity and excellence, that is well aligned with our own."

The firm's Canada operations are led by country managing partner Charles Hurdon. Norton Rose first moved into the market via a tie-up with Ogilvy Renault in June 2011, followed by a merger with Macleod Dixon in January 2012.

The latest expansion follows the firm's San Francisco office launch in June. The global firm took a 17-lawyer team from Sidley Austin to open a public law practice in the city.

Norton Rose Fulbright chief executive Peter Martyr said: "We are one of the fastest-growing law firms in the world and in just over five years, have established a presence in Australia, Canada, South and north Africa, Latin America and Central Asia."

In July, the firm announced it had entered an alliance with Kenyan firm Walker Kontos, which formally launches next month.

Norton Rose Fulbright posted global revenues of $1.732bn (£1.16bn) for the 2015-16 financial year. The figure is 3% down on the total of $1.792bn (£1.12bn) reported last year.