The John M. O’Quinn Foundation, the sole beneficiary of the estate of John M. O’Quinn in his will, has standing to intervene in litigation related to his probate case by O’Quinn’s longtime companion, Darla Lexington, over assets.

In a Nov. 3 opinion in In Re Darla Lexington O’Quinn, a 1st Court of Appeals panel that included justices Evelyn Keyes, Laura Carter Higley and Michael Massengale, unanimously denied a petition for mandamus filed by Lexington. Lexington wanted the Houston appeals court to overturn an order from Harris County Probate Judge Mike Wood that allows the foundation to intervene in the probate case and seek declaratory relief in it.