Sean O'Connor, right

Sean O'Connor, right

OC Managing Partner, Sheppard, Mullin, Richter & Hampton

WHY: Leads third-largest local firm: more than 80 attorneys, 140 employees; firm: 15 offices, about 900 lawyers. O’Connor in business trial practice group, heads real estate litigation team.

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RECENT: Regular on super lawyer, top lawyer lists.

NOTABLE: Made national news in early 2000s defending Cottonwood Christian Center against eminent domain action by city of Cypress; trial counsel for city of Anaheim in tussle with Angels Baseball over team name.

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