More law firm mergers in DC? After Wilmer Cutler Pickering's merger with Boston's Hale and Dorr, pundits are lining up to predict who may be next. The D.C. market, of course, is no stranger to law firm unions. It has been a prime target market for expansion -- second only to New York -- for the past several years. From 1996 to July 2003, there have been 38 mergers involving D.C.-area firms.