Paxton accuses Dr. M. Brett Cooper, an associate professor of pediatrics at UT Southwestern Medical Center who also practiced at Children's Medical Center Dallas, of prescribing various levels of testosterone cypionate to 15 patients between the ages of 14 and 17. Most patients listed in the lawsuit were between 16 and 17 years old. In the 34-page lawsuit filed in Collin County, Paxton calls Cooper a “scofflaw” and “radical gender activist” — a reprisal of similar labels he used in his first two lawsuits against Dr. May Lau of UT Southwestern and Dr. Hector Granados of El Paso. Paxton has...