Brown Rudnick has planted a flag in California by scooping up a 10-attorney litigation boutique in Orange County.

Boston-based Brown Rudnick, with about 190 attorneys, opened its Irvine, California, office on April 8 by combining with Rus Miliband & Smith, a litigation shop that focuses on complex, commercial, and bankruptcy cases.

Brown Rudnick chairman Joseph Ryan said the firm plans to double the number of attorneys in that office during the next year through lateral hires.

"Our vision for the office is to include some of those other practice areas that represent strengths of Brown Rudnick," Ryan said.

With a focus on litigation, corporate restructuring, technology company mergers and acquisitions, intellectual property, and capital markets, Brown Rudnick has eight offices, including locations in New York, Washington, London and Dublin.

Rus Miliband partner Ronald Rus said that the combination would give his firm the support it needs to take on heftier matters.

Asked whether he had concerns about the changes the merger would bring to his firm, he said, "The honest answer is, ‘Of course.’ " But he added: "There is something besides being comfortable, and I’m more excited than concerned. I’m 63 going on 40."

Rus Miliband’s bigger cases have included blocking a hostile takeover of Trammell Crow Partners’ $215 million Park Place project in Irvine, a mixed-use development project near the city’s business district. It represented developer SunCal Cos. in the bankruptcy of Lehman Brothers Holdings, which had invested about $2.3 billion in company projects.

Ryan said no layoffs of attorneys or staffers were expected because of the merger.