When did Obama surrender his license to practice law?

Both of the Obamas decided to allow their licenses to lapse, since they were no longer going to be active lawyers; Barack ran for the presidency and Michelle focused on her family and being First Lady. However, it is a myth that there was some problem with either of their licenses; they simply allowed them to become inactive. It should be noted that since both the Obamas were lawyers in good standing, they could decide to renew the licenses and return to the practice of law at some future time.