How high can Quinn Emanuel Urquhart & Sullivan fly? Since it first appeared on the Am Law 200 list in 2007, the firm has relentlessly climbed over its competition, establishing itself as a litigation powerhouse. And in 2011 it took another big leap. The firm’s revenue jumped 31 percent, to $723.5 million—the biggest percentage increase on our list—and profits per equity partner rose 15 percent, to $4.16 million. Only perennial chart-topper Wachtell, Lipton, Rosen & Katz can claim higher per-partner profits.

“People were busy,” says John Quinn, one of the founders of the litigation-only firm. “A lot of things went very, very well.”