Mark Harrington, general counsel of Guidance Software.
Mark Harrington, general counsel of Guidance Software. ()


Guidance Software Inc. specializes in digital investigations and electronic discovery for corporations, government agencies and law-enforcement organizations. Guidance’s diverse clientele includes Cisco Systems Inc., Facebook Inc., McAfee Inc., the North Atlantic Treaty Organization and the U.S. Department of the Treasury.

Guidance took in more than $110 million in revenue in 2013. According to general counsel Mark Harrington, the employment trend at the company has been flat during the past year.


Harrington supervises a team of two attorneys. One handles most of the contractual work (licensing, services, procurement) while the other supports sales and marketing related to the company’s e-discovery software. Harrington estimates that 80 percent of nonlitigation work is handled in-house.

The workload is about 50 percent transactional, 20 percent related to compliance and risk management, 10 percent involving public company and board support, 10 percent litigation and 10 percent intellectual property protection.


Harrington arrives at his Pasadena office by 9 a.m. and leaves at about 6 p.m. Once home, he might work on his laptop computer for an hour or two, he said, but the legal team is on call around the clock. Harrington travels about 5 percent of the time. Asked the part of the job he likes best, Harrington pointed to the “diversity of legal issues and working closely with businesspeople to create jobs and a profit — I like that.” He reports to chief executive officer Victor Limongelli.


Harrington has used Latham & Watkins for corporate work; Christie Parker & Hale of Glendale, Calif., for patents; and Jackson DeMarco Tidus Peckenpaugh of Irvine, Calif., for real estate. He doesn’t have “a ton of outside work,” so alternative billing is not a big issue, but requests budgets on occasion. “I’m in favor of it, but it’s tough to measure it accurately.”


Following his 1990 graduation from the University of California at Los Angeles, Harrington worked at Ticketmaster while attending Southwestern Law School. “In the early ’90s, Ticketmaster was being investigated for antitrust [violations], so it was an exciting time to be working in-house,” he said. After earning his J.D., Harrington went to work for Munger Tolles & Olson on litigation, including state lawsuits against the tobacco industry. In 1997, he landed an in-house position at Trillium Digital Systems (later acquired by Intel Corp.) In 2001, he joined Intel as a division general counsel. In 2004, he moved to Guidance as deputy general counsel, and became general counsel in 2006.


A native of Bakersfield, Calif., Harrington has two daughters, ages 9 and 11.

His hobbies include beach volleyball, UCLA sports, Los Angeles Kings hockey and spending time with family and friends.


“The Man in the High Castle” by Philip K. Dick. His summary: “What would the world be like if the Axis had won World War II?” His last movie was “The Lego Movie.” “Most movies I see these days are kid-­oriented.”