Update January 30, 2024: Search PZP at the patent website: https://brevets-patents.ic.gc.ca/opic-cipo/cpd/eng/search/results.html?query=PZP&start=1&num=10&type=basic_search&newSearch=0 #5 in the results is: “5. 2378478 FERTILITY IMPAIRING VACCINE CONTAINING AVIAN ZONA PELLUCIDA PROTEIN AND METHOD OF USE” But the link to the description for that item now … Continue reading →