The majority of the Am Law 200 firms founded in Pennsylvania fall into one of two categories: firms that have grown head count by more than 15% in the last five years, and firms that negotiated a major merger last year.

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One of those combinations—Philadelphia-based Pepper Hamilton’s tie-up with Atlanta-born Troutman Sanders—would have closed in April, but was delayed because of the coronavirus pandemic. Another was Drinker Biddle & Reath’s merger with Minneapolis-based Faegre Baker Daniels, which became official Feb. 1, creating a firm with 1,300 professionals in 22 offices. And the third was Duane Morris, which acquired midsize New York firm Satterlee Stephens, also Feb. 1.