Nearly a decade ago, Offit Kurman planted a flag in Philadelphia, opening an office with one lawyer. Now, the Baltimore-born firm has 30 lawyers in Pennsylvania, after adding three principals to the Philadelphia office in six weeks, and says Philadelphia could become its largest office.

Theodore A. Offit, co-founder and managing principal of Offit Kurman, said the firm has been focused on establishing a truly regional model, rather than being a Baltimore headquarters with satellite offices in other cities. This management plan, which includes a regional managing partner for each of the firm’s five regions, was implemented in July.