DLA Piper’s U.S. arm has reported an increase in revenue for 2010, eking out a 1 percent rise in top-line earnings to $1.03 billion, according to the figures provided by the firm.

The firm also pushed profitability to record levels, with U.S. profits per partner (PPP) jumping more than 12 percent to $1.38 million–its highest returns since the three-way merger between U.K. firm DLA, Chicago’s Piper Rudnick, and San Diego-based Gray Cary Ware & Freidenrich in 2005.