The following graph follows the approximately 42,000 patent applications filed in 2005 in Canada. Most of these applications (about 73%) were filed as PCT Applications and entered national phase in Canada. Since 2005 about 620 divisional applications have been filed with effective filing dates of 2005.

• Pending (green) applications are those that are filed but for which examination has not been requested. Canada allows examination to be deferred by up to five years from the filing date. That is why by 2011, there are no examinations for which examination has not been requested.
• Applications undergoing examination (blue) are those for which examination has been requested. Since the online data for an application does not indicate when office actions are issued, this include applications which are waiting for examination as well as those undergoing active examination. As of the end of 2011, 47% of applications filed in 2005 were awaiting or undergoing examination.
• Dead (red) applications are those which were irrevocably abandoned without ever being granted. Applications for which maintenance fees are not paid prior to grant or abandoned during prosecution are included in this category. About 37% of the applications filed in 2005 are dead as of the end of 2011.
• Granted patents (yellow) are those that have been granted. 20 applications were granted by the end of 206 and almost 6000 (about 14%) by the end of 2011.
• Lapsed (pink) patents are those that have lapsed or declared dead since they were granted, typically for failure to pay maintenance fees. 233 patents have lapsed of those filed in 2005.

I have created a similar chart for applications that entered the Canadian patent system in 1999 – either filed in 1999 or entered national phase in 1999. Unfortunately, this data is not directly comparable to the above chart, which includes applications with a 2005 filing date. The above data shows a sharper increase in the number applications under examination in 2010 because a) a significant number of applicants wait the full 5 years to request examination; and b) most PCT applicants enter national phase at or very near the 30 month national entry deadline (only about 4% of applicants take advantage of the additional 12 month extension).