Regarding compounds moving back and forth......

From the June 3rd, 2013 news release: "Pursuant to the Arrangement, Resverlogix has retained its research and development activities related to the development of compounds for applications with indications involving a therapeutic increase in Apolipoprotein A-1 (ApoA-I), including the clinical program related to RVX-208, a first in class small molecule for the treatment of atherosclerosis. Resverlogix has completed the spin-off of all other research and development activities related to its epigenetic platform technology to Zenith."

From the March 17th, 2014 news release: "Resverlogix also announced that it entered into a Waiver Agreement with RVX Therapeutics Inc. ("RVX Therapeutics"), a wholly-owned subsidiary of Zenith Epigenetics Corp., whereby Resverlogix agreed to waive its right under a License Agreement dated June 3, 2013 to license any method or pharmaceutical agent within the scope of certain Licensee Patents owned or controlled by RVX Therapeutics that may be determined to come within the ApoA-I Therapeutic Field (as defined in the License Agreement), and RVX Therapeutics agreed not to develop any patents and/or compounds for any indication within the ApoA-I Therapeutic Field for a period of five years. RVX Therapeutics agreed to pay Resverlogix $2.5 million in cash and granted to Resverlogix a right of first refusal for a period of three years thereafter in respect of the license or sale of such patents and/or compounds that are determined to come within the ApoA-I Therapeutic Field. Entering into the Waiver Agreement generated cash for Resverlogix without impacting on its core assets."

It sounds like a structure was already in place for the two companies to evaluate each others compounds under certain restrictions.

BDAZ