ALEXANDRIA, Va., April 9 -- United States Patent no. 12,269,831, issued on April 8, was assigned to Vertex Pharmaceuticals Inc. (Boston).

"Modulators of cystic fibrosis transmembrane conductance regulator" was invented by Jeremy J. Clemens (San Diego), Brett C. Bookser (San Diego), Thomas Cleveland (San Marcos, Calif.), Timothy R. Coon (Carlsbad, Calif.), Michel Gallant (Pierrefonds, Canada), Peter Diederik Jan Grootenhuis (Del Mar, Calif.), Sara Sabina Hadida Ruah (La Jolla, Calif.), Julie Laterreur (San Diego), Vito Melillo (Escondido, Calif.), Mark Thomas Miller (Rancho Santa Fe, Calif.), Prasuna Paraselli (San Diego), Yeeman K. Ramtohul (Pierrefonds, Canada), Thumkunta Jagadeeswar Reddy (Pierrefonds, Canada), Claudio Sturino (Ile Bizar...