Can't think of any significant cases where notes are disqualified. Periodically, a paralegal, traffic lawyer or someone who's been doing their homework stands up and asks an officer "do you have an independent recollection?" and the officer says "no." Then the defendant/representative asks for the notes to be excluded. With very few exceptions, though, the officer answers "yes" and that tactic is out the window.
The only other time I could see the notes being excluded is if there's obviously something wrong with them... for example, the officer's notes have been obviously edited. "Observed white (scratched out) gray (scratched out) Toyota Corolla (scratched out) Honda Civic in L1 above speed limit, LT1 marksman reading 105 (scratched out) 150 km/h @ 228 metres, stopped vehicle without sight lost (added in above the line with an arrow) identified driver..."
But that's not too likely either...
* The above is NOT legal advice. By acting on anything I have said, you assume responsibility for any outcome and consequences. *
http://www.OntarioTicket.com OR http://www.OHTA.ca