Blank Rome LLP will launch a Chicago office this week with a group of attorneys from Katten Muchin Rosenman LLP as founding partners, the firm announced Tuesday.“If you look at our national platform, which is primarily on the East Coast, West Coast and in Texas, it was very important for us to fill out that platform by being in the Midwest, and specifically being in Chicago,” said Grant S. Palmer, managing partner and CEO of the Philadelphia-based firm.Former Katten partners Kenneth J. Ottaviano, Karin H. Berg, …