Blake, Cassels & Graydon LLP (Blakes); is a Canadian-based international business law firm. It is one of the "seven sisters" in Toronto, Canada. Founded in 1856 by Dominick Edward Blake, Blakes has offices in Montreal, Ottawa, Toronto, Calgary, Vancouver, New York City, London, Bahrain, Beijing and associated offices in Al-Khobar and Shanghai. The Firm's international capabilities are extended by its charter membership in Lex Mundi, the world's largest non-exclusive referral network of independent law firms with member firms in 160 jurisdictions. Blakes is an advisory member of TechLaw Group, Inc., an international network of 18 law firms in more than 31 countries, whose primary mission is to advance clients' interests in all areas of technology-related business.