Answer this based on the information provided and according to intellectual property Canadian law.

Pain Reliever Scenario

Abbott Pharmaceutical is working on a new pain reliever. It improves on its top-selling existing pain reliever.

1) Since Abbott Pharmaceutical is only improving upon its existing patented pain reliever, should it register a new patent? Explain your answer.

Since Abbott Pharmaceutical is only improving upon its existing pain reliever, it should or should not? And why?