ALEXANDRIA, Va., March 26 -- United States Patent no. 12,258,587, issued on March 25, was assigned to Exosome Diagnostics Inc. (Waltham, Mass.).

"Compositions and methods for internal controls of microvesicle isolations" was invented by Georg Stoll (Munich), Daniel Enderle (Martinsried, Germany), Mikkel Noerholm (Martinsried, Germany) and Johan Karl Olov Skog (Lincoln, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides compositions, methods and kits for internal controls of microvesicle isolations. The compositions, methods and kits can comprise enveloped viruses, including, but not limited to, inactive mouse hepatitis virus (MHV)."

The patent was filed on Nov. 20, 2019, un...