As André mentioned in his presentation, if someone were to open a petition today, February 28, and have it open for 120 days, it could never be presented, so we'd have to put that warning up now.
Evidence of meeting #144 for Procedure and House Affairs in the 42nd Parliament, 1st Session. (The original version is on Parliament’s site, as are the minutes.) The winning word was signatures.
A recording is available from Parliament.