Male contraceptives
CA 2449909 A1 · Owner: Cheng, C. Yan · Inventors: Cheng, C. Yan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are male contraceptives containing a peptide and analogs thereof having an amino acid sequence corresponding to the second extracellular domain of a mammalian occludin. The peptides may be linked to a carrier targeting testicular cells, preferably to a modified follicle stimulating hormone. Methods of producing such a contraceptive and a method of use are also , disclosed.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed June 19, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 19, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 19, 2024.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.