K&L Gates LLP, Pittsburgh’s largest law firm, said Monday it has established an office in Warsaw, marking its 36th location and third new site so far this year. It is the first Pittsburgh-based firm to open an office in the Polish city.

The office is expected to open March 15. K&L Gates hired a team of lawyers from Hogan & Hartson Jamka, the Warsaw office of Washington, D.C.-based Hogan & Hartson LLP, to staff it. Maciej Jamka will serve as administrative partner of K&L Gates’ Warsaw office which K&L Gates Chairman and Global Managing Partner Peter Kalis said via e-mail will include “approximately 30 lawyers.”

Kalis said Warsaw is a strategic location. “Poland is a Top 20 global economy and one that has withstood the challenges of the global financial crisis,” Kalis said in a prepared statement.

In January, K&L Gates opened offices in Tokyo and Moscow. It employs roughly 2,000 lawyers, including 237 in Pittsburgh, and topped $1 billion in 2009 revenue.

K&L Gates expects to move into new offices in Downtown Pittsburgh in One Oliver Plaza, a few blocks from its present home in the Henry W. Oliver Building, later this month. The date has not been disclosed publicly.