An Australian Patent Opposition Round-Up from the Patent Office Journal dated 26 April 2012.
The following patent applications have been opposed as at 26 April 2012.
| Patent Application No. | Applicant(s) | Opponent |
|  2005238278 |  Vector Corrosion Technologies Ltd |  Concrete Preservation Technologies Ltd |
| Â 2007233252 | Â Merial Limited | Â Intervacc AB |
| Â 2009295253 | Â Inertial Orthopaedic Navigation Solutions Pty Ltd | Â KCAT Investments Pty Limited |
No additional opposition proceedings have been withdrawn as at 26 April 2012.
No applications for an Extension of Patent Term have been made or accepted as at 26 April 2012.