After what Drinker Biddle & Reath leaders called a “substantial growth year,” the firm reported a 10.3 percent increase in gross revenue for 2006.

The firm’s revenue rose from $223 million in 2005 to $246 million in 2006. That number includes one month’s revenue from the firm’s merger partner, Gardner Carton & Douglas, because Drinker Biddle’s fiscal year ended Jan. 31, 2007, and the merger was consummated on Jan. 1.