Sandwich assay and kit
CA 2483408 A1 · Owner: Nygren, Per-Ake · Inventors: Nygren, Per-Ake; Ahlborg, Niklas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sandwich assay method for detecting the presence of a target molecule in a sample comprising a complex biological fluid is provided. The assay comprises providing a first affinity ligand with affinity for the target molecule which , affinity ligand is capable of being immobilized to a solid support; applying the sample in such a way that binding of a target molecule if present in the , sample, to the first affinity ligand is enabled; applying a second affinity ligand with affinity for the target molecule the application enabling binding , of the second affinity ligand to the target molecule; removing second affinity ligand not bound to target molecule; and detecting the presence of …
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 29, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 29, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 29, 2025.
- 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.