Date Published

Chapter 7 of the Act provides for the grant of a patent of addition.  Where a patent for an invention (“the main invention”) has been applied for or granted (the parent application or patent), and the applicant or patentee applies for a further patent for an improvement in, or modification of, the main invention, a patent of addition may be granted for the improvement or modification.  The phrase “the main invention” means the invention as claimed in the parent specification (see Monsanto Chemicals Ltd.'s Application (1968) AOJP 348).