ALEXANDRIA, Va., June 18 -- United States Patent no. 12,324,721, issued on June 10, was assigned to Align Technology Inc. (San Jose, Calif.).

"Dental attachment positioning apparatuses" was invented by Peter Webber (Redwood City, Calif.), Yan Chen (Cupertino, Calif.), Jihua Cheng (San Jose, Calif.), Bastien Pesenti (San Jose, Calif.), Chunhua Li (Cupertino, Calif.) and Jennifer C. Chen (San Francisco).

According to the abstract* released by the U.S. Patent & Trademark Office: "Dental attachment positioning apparatuses and methods of use. A dental attachment apparatus may include an orthodontic attachment having a surface shaped to conform to a contour of a buccal surface of a tooth, and one or more registration surfaces that are shaped to...