New contraceptive kit
CA 2319765 A1 · Owner: Verbost, Pieter Michiel · Inventors: Kloosterboer, Helenius Jan; Coelingh Bennink, Herman Jan Tijmen; Verbost, Pieter Michiel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention pertains to a contraceptive kit comprising means for the daily administration of a contraceptive agent characterised in that the single , contraceptive agent is a steroid compound having an activity profile inherently combining progestagenic and estrogenic activity. Within a general class of known steroidal compounds, steroids have been found which possess an outstanding combined profile of biological properties for use in contraception, especially via monotherapy. These steroids are selected from the group consisting of steroids satisfying structural formula (I) and prodrugs thereof, wherein the dotted lines each independently indicate an optional bond.
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 March 3, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 3, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 3, 2021.
- 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.