翰宇國際律師事務所於1890年成立，目前為世界主要律師事務所之一。翰宇秉承將事務所融合為一個整體合夥企業的宗旨，使得全球三十二個辦事處的律師緊密聯繫，合作無間。
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1890. Squire, Sanders & Dempsey is founded in Cleveland.
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1971. The firm opens its office in Washington DC.
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1974. Squire Sanders opens its Brussels office, the firm's first step toward establishing its presence in Europe.
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1974-82. Expansion continues with office openings in Columbus, Miami, Phoenix and New York.
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1990. Following the Velvet Revolution, the firm becomes one of the first US law firms to establish a permanent presence in Eastern Europe, opening an office in Prague.
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1991. Eastern European expansion continues with offices opening in Budapest and Bratislava.
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1992. Squire Sanders broadens European presence with the establishment of offices in London and Kyiv.
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1995. The firm opens an office in Moscow to serve the increasing needs of clients in Russia.
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1997. Squire Sanders establishes an office in Houston.
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1998. Squire Sanders opens its first office in Asia, the Hong Kong office.
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1999. The firm's office in Cincinnati opens.
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2000. The California, Tokyo and Beijing offices of Graham & James join Squire Sanders, broadening the firm's capabilities in the Western US and Asia. The expansion also gives Squire Sanders standing as one of the longest tenured US law firms in Japan, as Graham & James opened its office in Tokyo in 1955.
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2001. The firm establishes offices in Tampa and Tysons Corner.
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2002. Squire Sanders enters the Latin American market, opening an office in Rio de Janeiro.
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2004. Squire Sanders opens an office in Shanghai, expanding regional coverage in China to three offices, including Beijing and Hong Kong.
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2005. Squire Sanders further bolsters one of the strongest Central and Eastern European legal practice by adding a Warsaw office and providing on-the-ground services to clients with interests in that region.
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2005. Squire Sanders combines practices with Steel Hector & Davis LLP, adding offices in Santo Domingo and West Palm Beach.
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2006. Squire Sanders establishes an office in Frankfurt and doubles the size of its London office.
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2008. Squire Sanders establishes an office in São Paulo and bolsters Central and Eastern European practice with the addition of eight lawyers in Kyiv.