System for amplification of a fetal dna species
CA 2973165 C · Owner: The Chinese University Of Hong Kong · Inventors: Poon, Lit Man; Lo, Yuk Ming Dennis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention features a method for differentiating DNA species originated from a pregnant woman and from a fetus the pregnant woman is carrying the method comprising the steps of: (a) providing a blood sample taken from the pregnant woman; (b) generating a serum or plasma sample from the blood sample; (c) detecting the presence of a methylated version and an unmethylated version of a DNA species in the serum or plasma sample; and (d) analyzing the methylated or unmethylated version of the DNA species.
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 August 30, 2002 and granted August 28, 2018. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 30, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 30, 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.