Monophasic contraceptive method and kit comprising a combination of a progestin and estrogen
CA 2261689 A1 · Owner: Gast, Michael Jay · Inventors: Gast, Michael Jay
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention provides a method of contraception which comprises administering to a female of child bearing age for a combination of a progestin at a daily dosage of 40-500 µg trimegestone 250 µg - 4 mg , dienogest, or 250 µg - 4 mg drospirenone and an estrogen at a daily dosage , equivalent in estrogenic activity to 10-20 µg ethinyl estradiol for 23-25 days beginning on day 1 of the menstrual cycle and wherein the same dosage of , the progestin and estrogen combination is administered in each of the 23-25 days.
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 July 23, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 23, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 23, 2019.
- 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.