Patent Yard Sign in
Expired Canadian patentCanada

Nucleic acid ligand diagnostic biochip

CA 2312429 C · Owner: Creighton, Steve · Inventors: Jayasena, Sumedha; Drolet, Daniel; Gold, Larry

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

A nucleic acid ligand "biochip" is disclosed consisting of a solid support to , which one or more specific nucleic acid ligands is attached in a spatially defined manner. Each nucleic acid ligand binds specifically and avidly to a particular target molecule contained within a test mixture such as a bodily , fluid. The target molecules include but are not limited to, proteins , (cellular viral, bacterial, etc.) hormones, sugars metabolic byproducts, cofactor, and intermediates drugs, and toxins. Contacting the test mixture with the biochip leads to the binding of a target molecule to its cognate nucleic acid ligand. Binding of target to the nucleic acid ligand results in a detectable …

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 December 14, 1998 and granted December 8, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 14, 2018.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 14, 2020.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 14, 1998
GrantedDecember 8, 2015
Term endedDecember 14, 2018
Patent numberCA 2312429 C
Classification (IPC)C07B61/00 +2 more

Timeline

Timeline From CIPO dates

1999200120032005200720092011201320152017Application filedDec 14, 1998Patent grantedDec 8, 2015Term endedDec 14, 2018

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.