Patton Boggs, a large Washington DC-based law and lobbying firm, has seen an en masse exodus of its mortgage banking lawyers. Ballard Spahr created a Mortgage Banking Group for the three Patton Boggs partners and an associate, while Dykema welcomed two senior attorneys to its growing Financial Services Regulatory and Compliance practice. Patton Boggs did not return calls for comment regarding the future of its own mortgage practice, and the departed lawyers would not speculate as to the future of their former firm. Partners Richard Andreano, John Socknat and Michael Waldron...