Ober Kaler | 887 followers on LinkedIn. The law firms of Baker Donelson and Ober|Kaler have announced plans to combine. The combination will to take effect January 1, 2017. The combined firm, which will maintain the name of Baker Donelson, will become one of the 50 largest law firms in the country, with more than 800 attorneys and advisors across 25 offices in nine states as well as Washington, D.C.