The United States District Court for the Southern District of Ohio recently certified two questions involving Ohio's Dormant Mineral Act (ODMA) to the Ohio Supreme Court:
See Corban v. Chesapeake Exploration, L.L.C., et al., Case No. 2:13-cv-246 (May 14, 2014). While not yet accepted by the Ohio Supreme Court, given the other issues that the Court has agreed to hear recently involving the ODMA, the chances are good that these issues will be as well.
[Update: The Ohio Supreme Court has agreed to answer the questions posted above. See here.]