SAN FRANCISCO — After surging 11 percent in 2011, Wilson Sonsini’s revenue growth sputtered in 2012.

The Silicon Valley stalwart’s gross revenue fell 2 percent to $539 million. That $10 million decline, coupled with a 3 percent uptick in head count, contributed to a 4 percent drop in Wilson Sonsini Goodrich & Rosati’s revenue per lawyer, which now stands at $890,000. As the firm’s partnership grew 3 percent, profits per partner fell 7 percent to $1,645,000.