RICHMOND, Va.--(BUSINESS WIRE)--Commonwealth Biotechnologies, Inc. (Nasdaq Capital Market: CBTE), a life sciences contract research organization and biotechnology company, announced today that it has signed a modified and extended non-binding term sheet (the “Term Sheet”) to acquire the outstanding capital stock of Mimotopes Pty Ltd (“Mimotopes”), a wholly-owned subsidiary of PharmAust Ltd, an Australian Stock Exchange listed company (ASX: PAA), in a transaction structure yet to be formally determined.