Immobilization of oligonucleotides onto solid supports
CA 2445838 C · Owner: Avecia Biotechnology Inc · Inventors: Sinha, Nanda Dulal
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A solid support bound polynucleotide, preferably a 3'-O- or 5'-O-substituted polynucleotide, is disclosed. The polynucleotides are of formula: (I) wherein Q is a sustantially pure polynucleotide each X is O or S; Y is an inert , spacer group; R represents the solid support. Also disclosed is a method of isolating a target biomolecule, preferably a protein or a polynucleotide from , a mixture.
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 April 25, 2002 and granted November 22, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 25, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 25, 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.