McClendon did not immediately respond to an email about the lawsuit on Friday. Attempts to reach American Energy Partners' attorneys were unsuccessful on Friday.
McClendon founded American Energy Partners earlier this year after his ouster from Chesapeake Energy Corp.
American Energy Partners is based on the sixth floor of an office building at 301 NW 63 — just a few blocks from Chesapeake's main campus. Various media have reported American Energy Partners is buying up oil and gas leases in Ohio's Utica shale after securing a round of private equity funding.
McClendon has so far not spoken to the media about his plans for American Energy Partners, and has either declined to comment or not responded to The Oklahoman's requests for an interview.
Along with forming the shell companies American Energy-Utica, LLC and American Energy-Ohio, LLC, in Oklahoma, American Energy Partners has also registered the entities American Energy-Marcellus, LLC, American Energy-Anadarko, LLC, and American Energy Anadarko Holdings, LLC, according to the Oklahoma secretary of state's office.